RE: [Chevelle-List] SBC Cam selection
Yes, Eventually as money permits. Changing the heads,torque converter and gears. Maybe even a TH700-R4. I think we all wish we could afford to do all of the work and changes at the same time. After the cam, the torque converter could be next. (still trying to figure that into the budget and convince the wife) Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com ...plus Brian has stock heads, a mild torque converter, and highway gears. He could go a lot more aggressive and be fine on the street by changing all of these (and in fact he might just do that over time! > > - > To Unsubscribe please visit www.chevelles.net/list.html > To start a new topic, send mail to: [EMAIL PROTECTED] > - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED] - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection and now torque converters
> My friend who's helping me put the engine in says I should just try the > stock converter first because driving around town with a higher stall is a > pain in the ass. He has a 67 RS/SS Camaro and used to drag race it, so I'm > wondering if all his experience is with radical converters (for racing). > Are the torque converters that are "slightly higher than stock" a pain when > driving around town? Actually, that's not a bad idea. Use the stock converter to break in the engine, then if it won't idle and/or seems sluggish you can swap converters. Besides, different engines will have different stall speeds with the same converter. The engine with more torque will "stall" at a higher rpm than the engine with less torque. Until you get into 2800 rpm or higher stalls, you probably won't notice it too much. > What will be the determining factor if I need a different converter? Drag strip testing or a chassis dyno is the best way to know if you need more stall. Another, less scientific approach is if the idle rpm in park has to be set really high to keep the engine running when you put it in drive. If your converter is too tight, you'll know what I mean the first time you go from park to drive. > Is it strictly to get a better launch? Pretty much. A stall converter is comparable to side stepping the clutch in a manual trans car. The idea is to get the engine into it's torque curve before it tries to move the car. I had a 4500 rpm stall (I ordered a 2500) in my '70 429 Torino and it would idle in drive without a park brake and not budge. When I pulled away from a stop the engine would go to about 3000 rpm and then start nudging along and gradually get going. If I stomped on the gas from a dead stop, the rpm would shoot up to around 5000 and the back tires would explode into smoke. I was 18 and it was the first car I built, it was useless for driving around but it was probably the most fun car I've had. I guess what I'm trying to say is if you decide to get a looser converter, talk to the manufacturers about your combination before you spend your money. cYa- Herb Lumpp 1966 El Camino ACES 3509, MCC 528 http://users.adelphia.net/~hlump/ - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection
Hi Brian, I had a Comp Cams 280 Magnum in a 350 Camaro years ago and I think it was one of the best cams I've had. Keep in mind the Camaro had a 4-speed and 3.73 posi, so the 280 worked like a charm. It might be a bit rough for a daily driver though. I've also had the Comp Cams 270 Magnum in two different 350's over the years and they also work great. Not quite as radical as the 280 but at least you can use a stock stall converter if you're running an automatic. No matter what cam you choose, I highly recommend getting the correct valve springs to avoid any problems down the road, it's cheap insurance and a lot easier to install before the engine is in the car. Go to Comp's web page and do some reading, it will probably help you decide what size cam you should get... http://www.compcams.com/ cYa- Herb Lumpp 1966 El Camino ACES 3509, MCC 528 http://users.adelphia.net/~hlump/ - Original Message - From: "Brian Zack" <[EMAIL PROTECTED]> To: "Chevelle List (E-mail)" <[EMAIL PROTECTED]> Sent: Tuesday, October 22, 2002 11:28 AM Subject: [Chevelle-List] SBC Cam selection > What is the largest cam any of you are running in a daily driver with a > small block 350. I have a '70 Chevelle Malibu with a 350 4-bolt main, > cast pistons, 9:1 compression stock heads, edlebrock performer manifold > edlebrock 600 cfm carb, 1 5/8" headers, and dual 2" exhaust. It also has the > stock stall converter and I think either 2:73 ot 3:07 gears ( I have to > verify that) Right now I have a crane energizer 266H which is 266 duration > and .440 lift. I am going to be changing to a larger cam and was wondering > what max. size anyone might recommend. I was thinking of of the crane > energizer w/ .467 lift or the crane energizer with .454 lift. But, I dont > think the smaller one would give me that much of a difference. I think I > would have to change my springs though and probably the converter. Has > anyone used a larger cam and not upped the converter? I would assume it > would probably hurt mileage and not have that great of low speed torque. Any > recommendations? > > Brian Zack > '70 Chevelle Malibu - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection
Rodney Don't woory,,,be happy!! there is no such thing as too much for the street!!! As Tim Taylor sayes "MORE POWER" ! Bill C Ct 70 LS6 PS if I had a few more dollrs, that new 572 Big Block would look JUST fine between the fenders of this 'ole 70 chevelle Puts a big :) on my face!!!
Re: [Chevelle-List] SBC Cam selection and now torque converters
Thanks everyone for boosting my confidence back up :) My thinking was that I could run a higher lift and get away with it, but since this stuff is pretty new to me I was getting a little worried wondering if I goofed :) Anyways, thanks again for the explanations also that was really informative! Dave, you were right the specs of the cam are Duration @ .050 218I, 228 E. Lift 525" I, 525" E. Brad, it comes with a Performer manifold and it has 1.6 roller rockers. I'll be using an Edelbrock Q-Jet 795 cfm and 1-3/4" Hooker Super Comps and a 2.5" Flowmaster system with 40 series mufflers. Since you guys brought up torque converters and since I don't have any experience with them, let me throw out a couple questions. I realize that optimally for performance I would want to have a torque converter with at least a slightly higher than stock stall. I've never driven a car that had a performance converter in it, so I really have no idea what to expect from it. My friend who's helping me put the engine in says I should just try the stock converter first because driving around town with a higher stall is a pain in the ass. He has a 67 RS/SS Camaro and used to drag race it, so I'm wondering if all his experience is with radical converters (for racing). Are the torque converters that are "slightly higher than stock" a pain when driving around town? What will be the determining factor if I need a different converter? Is it strictly to get a better launch? What were you guys talking about before about losing vacuum? Are there other side effects of using the stock converter? Thanks! Rodney. 71 Chevelle El Mirage, AZ - Original Message - From: "Brad Waller" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 23, 2002 5:21 PM Subject: RE: [Chevelle-List] SBC Cam selection > > From: On Behalf Of Rodney. > > Subject: Re: [Chevelle-List] SBC Cam selection > > > > You guys are scaring me... I just bought a crate engine with > > a hydrolic roller with a .525 lift (the ZZ4 HOT cam) and > > L-98 aluminum vette heads... It's being shipped as we speak. > > Did I overdue it for a street car? BTW it's 375 horse and > > 417 ft./lb torque. > > As Dave said, you are safe. Roller cams are different, plus Brian has > stock heads, a mild torque converter, and highway gears. He could go a > lot more aggressive and be fine on the street by changing all of these > (and in fact he might just do that over time! > > Your setup sounds perfect. I don't have all the particulars, but a > quick look with Dyno2000 shows a dead flat torque curve if you have a > dual plane manifold! I plugged in the heads and cam, estimated 9.5:1 > compression, dual plane manifold, and small tube headers and got about > 430 lb-ft from 2000 to 4000 RPM, with a peak of 357 HP at 5000 RPM. > Swapping to a single plane loses 30 lb-ft at 2000 rpm, but ups the HP to > 370. > > But then again, I can't confirm the validity of the cam or head specs > that I downloaded... > > Brad Waller ([EMAIL PROTECTED]) > '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs > '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes > > > - Original Message - > > From: "Brian Zack" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, October 23, 2002 9:15 AM > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > > Is a .467 lift too large for the street? Thanks for the > > replies. I dont > > > want to go too big. I know if I had considered going up to > > say .480 I > > would > > > probably kill my driveability and low end torque and be > > over camming it. I > > > guess I'll call Comp. cams and/or Crane cams and talk with > > them to answer > > > any more recommendations or things to beware of. Tom, Did > > you get the cam > > > specs on your Cutlass? > > > > > > Brian Zack > > > '70 Chevelle Malibu > > > mailto:brianz@;dpsabq.com > > > > > > > > > > > > -Original Message- > > > From: Don [mailto:doverpeck@;cinci.rr.com] > > > Sent: Wednesday, October 23, 2002 10:04 AM > > > To: [EMAIL PROTECTED] > > > Subject: Re: [Chevelle-List] SBC Cam selection > > > > > > > > > > > > Just be careful Brian. The number 1 mistake street engine > > builders make is > > > to over-cam & over-carburate. > > > Don > > > > > > > > > > I am considering doing the cam change because ever since > > I built the > >
RE: [Chevelle-List] SBC Cam selection
> From: On Behalf Of Rodney. > Subject: Re: [Chevelle-List] SBC Cam selection > > You guys are scaring me... I just bought a crate engine with > a hydrolic roller with a .525 lift (the ZZ4 HOT cam) and > L-98 aluminum vette heads... It's being shipped as we speak. > Did I overdue it for a street car? BTW it's 375 horse and > 417 ft./lb torque. As Dave said, you are safe. Roller cams are different, plus Brian has stock heads, a mild torque converter, and highway gears. He could go a lot more aggressive and be fine on the street by changing all of these (and in fact he might just do that over time! Your setup sounds perfect. I don't have all the particulars, but a quick look with Dyno2000 shows a dead flat torque curve if you have a dual plane manifold! I plugged in the heads and cam, estimated 9.5:1 compression, dual plane manifold, and small tube headers and got about 430 lb-ft from 2000 to 4000 RPM, with a peak of 357 HP at 5000 RPM. Swapping to a single plane loses 30 lb-ft at 2000 rpm, but ups the HP to 370. But then again, I can't confirm the validity of the cam or head specs that I downloaded... Brad Waller ([EMAIL PROTECTED]) '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes > - Original Message - > From: "Brian Zack" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, October 23, 2002 9:15 AM > Subject: RE: [Chevelle-List] SBC Cam selection > > > > Is a .467 lift too large for the street? Thanks for the > replies. I dont > > want to go too big. I know if I had considered going up to > say .480 I > would > > probably kill my driveability and low end torque and be > over camming it. I > > guess I'll call Comp. cams and/or Crane cams and talk with > them to answer > > any more recommendations or things to beware of. Tom, Did > you get the cam > > specs on your Cutlass? > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > > > -Original Message- > > From: Don [mailto:doverpeck@;cinci.rr.com] > > Sent: Wednesday, October 23, 2002 10:04 AM > > To: [EMAIL PROTECTED] > > Subject: Re: [Chevelle-List] SBC Cam selection > > > > > > > > Just be careful Brian. The number 1 mistake street engine > builders make is > > to over-cam & over-carburate. > > Don > > > > > > > I am considering doing the cam change because ever since > I built the > > engine > > > about a year ago, the new crane cam and lifters will > clatter and tap > every > > > so often and I'm not sure if this could be damaging the > cam lobes too or > > > not. I have tried re-adjusting the valves 2 or 3 times > and it seems to > go > > > away for a little bit then comes back. I have tried > different amount of > > > turns starting at 1/2 turn after clattering stops and am > now between 3/4 > > to > > > 1 turn. I have also tries marvel mystery oil to see if > that would help a > > > sticking lifter. No help. Being a daily driver, I can only alow a > weekend > > > down time and dont want to just buy lifters and then get > into it and > find > > > out the cam is going bad too and not be able to get > another one right > > away. > > > I know eventually, a bigger stall converter (and tranny > cooler at the > same > > > time) will help my seat of the pants feel. I did a mild > polishing of the > > > ports on the redone heads when I built it. I also want > to eventually > > change > > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You > know that with > > the > > > horsepower bug, you always want just a little more and > still keep it > > > streetable. ; ). Any other comments would be appreciated. > > > Thanks > > > > > > Brian Zack > > > '70 Chevelle Malibu > > > mailto:brianz@;dpsabq.com > > > > > > > > > -Original Message- > > > From: Dave Studly [mailto:chevelle@;studly.net] > > > Sent: Tuesday, October 22, 2002 9:00 PM > > > To: [EMAIL PROTECTED] > > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > > > > Brian, > > > > > > I'm no expert, but it almost sounds like you're splitting > hairs. You > > > mention the car being a daily driver, so I'm gonna assume > you're not > drag > > > racing it much. Adding .015-inch
Re: [Chevelle-List] SBC Cam selection
Well stated Dave. I agree completely. Don > Rodney, > > No, don't worry too much. For all the talk on this thread about lift > numbers and streetability, duration numbers are really more important in > keeping a motor well-mannered for the street. Roller cams allow much more > aggressive lobe profiles that will allow a higher amount of lift to be > achieved for a given duration when compared against a flat-tappet cam. > (because it allows a steeper ramp for the roller lifter) I'll bet if you > look at the duration specs on your cam, it's under 230 degrees @ .050". You > also have much more modern heads which probably flow better than Brian's > vintage heads. These two differences mean a lot. > > I'm sure most of us would run roller cams in our old motors if it didnt cost > so much ~ $800 for the cam and lifters that retrofit into the older blocks. > I know I would. They are superior in pretty much every respect. > > -Dave > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Rodney. > Sent: Wednesday, October 23, 2002 5:50 PM > To: [EMAIL PROTECTED] > Subject: Re: [Chevelle-List] SBC Cam selection > > > You guys are scaring me... I just bought a crate engine with a hydrolic > roller with a .525 lift (the ZZ4 HOT cam) and L-98 aluminum vette heads... > It's being shipped as we speak. Did I overdue it for a street car? BTW > it's 375 horse and 417 ft./lb torque. > > > Rodney. > 71 Chevelle > El Mirage, AZ > > > > > ----- Original Message ----- > From: "Brian Zack" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, October 23, 2002 9:15 AM > Subject: RE: [Chevelle-List] SBC Cam selection > > > > Is a .467 lift too large for the street? Thanks for the replies. I dont > > want to go too big. I know if I had considered going up to say .480 I > would > > probably kill my driveability and low end torque and be over camming it. I > > guess I'll call Comp. cams and/or Crane cams and talk with them to answer > > any more recommendations or things to beware of. Tom, Did you get the cam > > specs on your Cutlass? > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > > > -Original Message- > > From: Don [mailto:doverpeck@;cinci.rr.com] > > Sent: Wednesday, October 23, 2002 10:04 AM > > To: [EMAIL PROTECTED] > > Subject: Re: [Chevelle-List] SBC Cam selection > > > > > > > > Just be careful Brian. The number 1 mistake street engine builders make is > > to over-cam & over-carburate. > > Don > > > > > > > I am considering doing the cam change because ever since I built the > > engine > > > about a year ago, the new crane cam and lifters will clatter and tap > every > > > so often and I'm not sure if this could be damaging the cam lobes too or > > > not. I have tried re-adjusting the valves 2 or 3 times and it seems to > go > > > away for a little bit then comes back. I have tried different amount of > > > turns starting at 1/2 turn after clattering stops and am now between 3/4 > > to > > > 1 turn. I have also tries marvel mystery oil to see if that would help a > > > sticking lifter. No help. Being a daily driver, I can only alow a > weekend > > > down time and dont want to just buy lifters and then get into it and > find > > > out the cam is going bad too and not be able to get another one right > > away. > > > I know eventually, a bigger stall converter (and tranny cooler at the > same > > > time) will help my seat of the pants feel. I did a mild polishing of the > > > ports on the redone heads when I built it. I also want to eventually > > change > > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with > > the > > > horsepower bug, you always want just a little more and still keep it > > > streetable. ; ). Any other comments would be appreciated. > > > Thanks > > > > > > Brian Zack > > > '70 Chevelle Malibu > > > mailto:brianz@;dpsabq.com > > > > > > > > > -Original Message- > > > From: Dave Studly [mailto:chevelle@;studly.net] > > > Sent: Tuesday, October 22, 2002 9:00 PM > > > To: [EMAIL PROTECTED] > > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > > > > Brian, > > > > > > I'm no expert, but it almost sounds like you'
RE: [Chevelle-List] SBC Cam selection
Rodney, No, don't worry too much. For all the talk on this thread about lift numbers and streetability, duration numbers are really more important in keeping a motor well-mannered for the street. Roller cams allow much more aggressive lobe profiles that will allow a higher amount of lift to be achieved for a given duration when compared against a flat-tappet cam. (because it allows a steeper ramp for the roller lifter) I'll bet if you look at the duration specs on your cam, it's under 230 degrees @ .050". You also have much more modern heads which probably flow better than Brian's vintage heads. These two differences mean a lot. I'm sure most of us would run roller cams in our old motors if it didnt cost so much ~ $800 for the cam and lifters that retrofit into the older blocks. I know I would. They are superior in pretty much every respect. -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Rodney. Sent: Wednesday, October 23, 2002 5:50 PM To: [EMAIL PROTECTED] Subject: Re: [Chevelle-List] SBC Cam selection You guys are scaring me... I just bought a crate engine with a hydrolic roller with a .525 lift (the ZZ4 HOT cam) and L-98 aluminum vette heads... It's being shipped as we speak. Did I overdue it for a street car? BTW it's 375 horse and 417 ft./lb torque. Rodney. 71 Chevelle El Mirage, AZ - Original Message - From: "Brian Zack" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 23, 2002 9:15 AM Subject: RE: [Chevelle-List] SBC Cam selection > Is a .467 lift too large for the street? Thanks for the replies. I dont > want to go too big. I know if I had considered going up to say .480 I would > probably kill my driveability and low end torque and be over camming it. I > guess I'll call Comp. cams and/or Crane cams and talk with them to answer > any more recommendations or things to beware of. Tom, Did you get the cam > specs on your Cutlass? > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > > -Original Message- > From: Don [mailto:doverpeck@;cinci.rr.com] > Sent: Wednesday, October 23, 2002 10:04 AM > To: [EMAIL PROTECTED] > Subject: Re: [Chevelle-List] SBC Cam selection > > > > Just be careful Brian. The number 1 mistake street engine builders make is > to over-cam & over-carburate. > Don > > > > I am considering doing the cam change because ever since I built the > engine > > about a year ago, the new crane cam and lifters will clatter and tap every > > so often and I'm not sure if this could be damaging the cam lobes too or > > not. I have tried re-adjusting the valves 2 or 3 times and it seems to go > > away for a little bit then comes back. I have tried different amount of > > turns starting at 1/2 turn after clattering stops and am now between 3/4 > to > > 1 turn. I have also tries marvel mystery oil to see if that would help a > > sticking lifter. No help. Being a daily driver, I can only alow a weekend > > down time and dont want to just buy lifters and then get into it and find > > out the cam is going bad too and not be able to get another one right > away. > > I know eventually, a bigger stall converter (and tranny cooler at the same > > time) will help my seat of the pants feel. I did a mild polishing of the > > ports on the redone heads when I built it. I also want to eventually > change > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with > the > > horsepower bug, you always want just a little more and still keep it > > streetable. ; ). Any other comments would be appreciated. > > Thanks > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > -Original Message- > > From: Dave Studly [mailto:chevelle@;studly.net] > > Sent: Tuesday, October 22, 2002 9:00 PM > > To: [EMAIL PROTECTED] > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > Brian, > > > > I'm no expert, but it almost sounds like you're splitting hairs. You > > mention the car being a daily driver, so I'm gonna assume you're not drag > > racing it much. Adding .015-inch of lift is going to be difficult to feel > > in the seat of your pants. Have you thought about switching to 1.6 > rockers > > instead? If you have .440 lift now with stock (1.5) rockers, swapping to > > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This > also > > adds a few degrees of duration. A *much* easier swap than a cam. > > > > I dont think you'll really want a cam with
Re: [Chevelle-List] SBC Cam selection
that sounds like great horsepower. I always thought 400HP,400 torque, was significant. And plus, you can never have too much HP. Chad - Original Message - From: "Rodney." <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 23, 2002 5:49 PM Subject: Re: [Chevelle-List] SBC Cam selection > You guys are scaring me... I just bought a crate engine with a hydrolic > roller with a .525 lift (the ZZ4 HOT cam) and L-98 aluminum vette heads... > It's being shipped as we speak. Did I overdue it for a street car? BTW > it's 375 horse and 417 ft./lb torque. > > > Rodney. > 71 Chevelle > El Mirage, AZ > > > > > - Original Message - > From: "Brian Zack" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, October 23, 2002 9:15 AM > Subject: RE: [Chevelle-List] SBC Cam selection > > > > Is a .467 lift too large for the street? Thanks for the replies. I dont > > want to go too big. I know if I had considered going up to say .480 I > would > > probably kill my driveability and low end torque and be over camming it. I > > guess I'll call Comp. cams and/or Crane cams and talk with them to answer > > any more recommendations or things to beware of. Tom, Did you get the cam > > specs on your Cutlass? > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > > > -Original Message- > > From: Don [mailto:doverpeck@;cinci.rr.com] > > Sent: Wednesday, October 23, 2002 10:04 AM > > To: [EMAIL PROTECTED] > > Subject: Re: [Chevelle-List] SBC Cam selection > > > > > > > > Just be careful Brian. The number 1 mistake street engine builders make is > > to over-cam & over-carburate. > > Don > > > > > > > I am considering doing the cam change because ever since I built the > > engine > > > about a year ago, the new crane cam and lifters will clatter and tap > every > > > so often and I'm not sure if this could be damaging the cam lobes too or > > > not. I have tried re-adjusting the valves 2 or 3 times and it seems to > go > > > away for a little bit then comes back. I have tried different amount of > > > turns starting at 1/2 turn after clattering stops and am now between 3/4 > > to > > > 1 turn. I have also tries marvel mystery oil to see if that would help a > > > sticking lifter. No help. Being a daily driver, I can only alow a > weekend > > > down time and dont want to just buy lifters and then get into it and > find > > > out the cam is going bad too and not be able to get another one right > > away. > > > I know eventually, a bigger stall converter (and tranny cooler at the > same > > > time) will help my seat of the pants feel. I did a mild polishing of the > > > ports on the redone heads when I built it. I also want to eventually > > change > > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with > > the > > > horsepower bug, you always want just a little more and still keep it > > > streetable. ; ). Any other comments would be appreciated. > > > Thanks > > > > > > Brian Zack > > > '70 Chevelle Malibu > > > mailto:brianz@;dpsabq.com > > > > > > > > > -Original Message- > > > From: Dave Studly [mailto:chevelle@;studly.net] > > > Sent: Tuesday, October 22, 2002 9:00 PM > > > To: [EMAIL PROTECTED] > > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > > > > Brian, > > > > > > I'm no expert, but it almost sounds like you're splitting hairs. You > > > mention the car being a daily driver, so I'm gonna assume you're not > drag > > > racing it much. Adding .015-inch of lift is going to be difficult to > feel > > > in the seat of your pants. Have you thought about switching to 1.6 > > rockers > > > instead? If you have .440 lift now with stock (1.5) rockers, swapping > to > > > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This > > also > > > adds a few degrees of duration. A *much* easier swap than a cam. > > > > > > I dont think you'll really want a cam with more than .470 lift and ~225 > > > degrees duration (@ .050") with a stock converter. You should be able > to > > > get away with stock valve springs in all of these cases. Don'
RE: [Chevelle-List] SBC Cam selection
One thing I've heard is that a roller cam will have more lift and still be streetable and make more power. A crate engine will have parts that will all work together nicely plus your heads will flow better. Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: Rodney. [mailto:71chevelle@;dscf.org] Sent: Wednesday, October 23, 2002 3:50 PM To: [EMAIL PROTECTED] Subject: Re: [Chevelle-List] SBC Cam selection You guys are scaring me... I just bought a crate engine with a hydrolic roller with a .525 lift (the ZZ4 HOT cam) and L-98 aluminum vette heads... It's being shipped as we speak. Did I overdue it for a street car? BTW it's 375 horse and 417 ft./lb torque. Rodney. 71 Chevelle El Mirage, AZ - Original Message - From: "Brian Zack" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 23, 2002 9:15 AM Subject: RE: [Chevelle-List] SBC Cam selection > Is a .467 lift too large for the street? Thanks for the replies. I dont > want to go too big. I know if I had considered going up to say .480 I would > probably kill my driveability and low end torque and be over camming it. I > guess I'll call Comp. cams and/or Crane cams and talk with them to answer > any more recommendations or things to beware of. Tom, Did you get the cam > specs on your Cutlass? > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > > -Original Message- > From: Don [mailto:doverpeck@;cinci.rr.com] > Sent: Wednesday, October 23, 2002 10:04 AM > To: [EMAIL PROTECTED] > Subject: Re: [Chevelle-List] SBC Cam selection > > > > Just be careful Brian. The number 1 mistake street engine builders make is > to over-cam & over-carburate. > Don > > > > I am considering doing the cam change because ever since I built the > engine > > about a year ago, the new crane cam and lifters will clatter and tap every > > so often and I'm not sure if this could be damaging the cam lobes too or > > not. I have tried re-adjusting the valves 2 or 3 times and it seems to go > > away for a little bit then comes back. I have tried different amount of > > turns starting at 1/2 turn after clattering stops and am now between 3/4 > to > > 1 turn. I have also tries marvel mystery oil to see if that would help a > > sticking lifter. No help. Being a daily driver, I can only alow a weekend > > down time and dont want to just buy lifters and then get into it and find > > out the cam is going bad too and not be able to get another one right > away. > > I know eventually, a bigger stall converter (and tranny cooler at the same > > time) will help my seat of the pants feel. I did a mild polishing of the > > ports on the redone heads when I built it. I also want to eventually > change > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with > the > > horsepower bug, you always want just a little more and still keep it > > streetable. ; ). Any other comments would be appreciated. > > Thanks > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > -Original Message- > > From: Dave Studly [mailto:chevelle@;studly.net] > > Sent: Tuesday, October 22, 2002 9:00 PM > > To: [EMAIL PROTECTED] > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > Brian, > > > > I'm no expert, but it almost sounds like you're splitting hairs. You > > mention the car being a daily driver, so I'm gonna assume you're not drag > > racing it much. Adding .015-inch of lift is going to be difficult to feel > > in the seat of your pants. Have you thought about switching to 1.6 > rockers > > instead? If you have .440 lift now with stock (1.5) rockers, swapping to > > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This > also > > adds a few degrees of duration. A *much* easier swap than a cam. > > > > I dont think you'll really want a cam with more than .470 lift and ~225 > > degrees duration (@ .050") with a stock converter. You should be able to > > get away with stock valve springs in all of these cases. Don't quote me > on > > that last part, though. > > > > You have a pretty well-matched combo for low-mid torque. Carb tuning > (using > > a dragstrip or dyno to verify your results) can make a noticeable > difference > > in power and mileage if you haven't done so. It's not glorious like a new > > cam, but it can be just as rewarding in the end. > > > > As an aside, I was just at the dragstrip this pa
Re: [Chevelle-List] SBC Cam selection
You guys are scaring me... I just bought a crate engine with a hydrolic roller with a .525 lift (the ZZ4 HOT cam) and L-98 aluminum vette heads... It's being shipped as we speak. Did I overdue it for a street car? BTW it's 375 horse and 417 ft./lb torque. Rodney. 71 Chevelle El Mirage, AZ - Original Message - From: "Brian Zack" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, October 23, 2002 9:15 AM Subject: RE: [Chevelle-List] SBC Cam selection > Is a .467 lift too large for the street? Thanks for the replies. I dont > want to go too big. I know if I had considered going up to say .480 I would > probably kill my driveability and low end torque and be over camming it. I > guess I'll call Comp. cams and/or Crane cams and talk with them to answer > any more recommendations or things to beware of. Tom, Did you get the cam > specs on your Cutlass? > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > > -Original Message- > From: Don [mailto:doverpeck@;cinci.rr.com] > Sent: Wednesday, October 23, 2002 10:04 AM > To: [EMAIL PROTECTED] > Subject: Re: [Chevelle-List] SBC Cam selection > > > > Just be careful Brian. The number 1 mistake street engine builders make is > to over-cam & over-carburate. > Don > > > > I am considering doing the cam change because ever since I built the > engine > > about a year ago, the new crane cam and lifters will clatter and tap every > > so often and I'm not sure if this could be damaging the cam lobes too or > > not. I have tried re-adjusting the valves 2 or 3 times and it seems to go > > away for a little bit then comes back. I have tried different amount of > > turns starting at 1/2 turn after clattering stops and am now between 3/4 > to > > 1 turn. I have also tries marvel mystery oil to see if that would help a > > sticking lifter. No help. Being a daily driver, I can only alow a weekend > > down time and dont want to just buy lifters and then get into it and find > > out the cam is going bad too and not be able to get another one right > away. > > I know eventually, a bigger stall converter (and tranny cooler at the same > > time) will help my seat of the pants feel. I did a mild polishing of the > > ports on the redone heads when I built it. I also want to eventually > change > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with > the > > horsepower bug, you always want just a little more and still keep it > > streetable. ; ). Any other comments would be appreciated. > > Thanks > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > -Original Message- > > From: Dave Studly [mailto:chevelle@;studly.net] > > Sent: Tuesday, October 22, 2002 9:00 PM > > To: [EMAIL PROTECTED] > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > Brian, > > > > I'm no expert, but it almost sounds like you're splitting hairs. You > > mention the car being a daily driver, so I'm gonna assume you're not drag > > racing it much. Adding .015-inch of lift is going to be difficult to feel > > in the seat of your pants. Have you thought about switching to 1.6 > rockers > > instead? If you have .440 lift now with stock (1.5) rockers, swapping to > > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This > also > > adds a few degrees of duration. A *much* easier swap than a cam. > > > > I dont think you'll really want a cam with more than .470 lift and ~225 > > degrees duration (@ .050") with a stock converter. You should be able to > > get away with stock valve springs in all of these cases. Don't quote me > on > > that last part, though. > > > > You have a pretty well-matched combo for low-mid torque. Carb tuning > (using > > a dragstrip or dyno to verify your results) can make a noticeable > difference > > in power and mileage if you haven't done so. It's not glorious like a new > > cam, but it can be just as rewarding in the end. > > > > As an aside, I was just at the dragstrip this past sunday and a friend was > > there with his 90's LT-1 Roadmaster station wagon. He upgraded the > exhaust > > which killed the good low-end torque he had (motor is stock, except for > > slightly modded air box). To remedy that, he changed the torque converter > > to one from a S-10 application (he estimated 2000-2100 stall, versus > > 1200-1300 stock -- no tach to truly verify these numbers.) and picked up
RE: [Chevelle-List] SBC Cam selection
Yes, that would be great. I'll try and look up a couple cams tonight and e-mail you off list. I was hoping for 350 hp, but it probably wont hit that mark exactly unless I change to better flowing heads. Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: Brad Waller [mailto:brad@;ep.com] Sent: Wednesday, October 23, 2002 3:15 PM To: [EMAIL PROTECTED] Subject: RE: [Chevelle-List] SBC Cam selection You're right, I don't know why I thought the XE cams were crane. I was looking for cams similar to yours and must have got stuck in my mind that I was looking at Crane. I have Dyno2000 and lots of cam and head flow files, so I can run a quick simulation if you want. These are usually optimistic, and don't go into full detail, but they can usually tell you if you are heading in the right direction with a single change (cam or head). Brad > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net] On Behalf Of Brian Zack > Sent: Wednesday, October 23, 2002 10:19 AM > To: '[EMAIL PROTECTED]' > Subject: RE: [Chevelle-List] SBC Cam selection > > > Aren't the extreme energy the comp cams line? I think it > would be under > warranty. But, I bought it through Summit and we moved since > I bought it and > I cant find the paperwork. So, I guess I'm outta luck. Also, > I think the XE > cams require a spring change. I'll stop bugging all and give > a call to crane > and comp. Thanks to everyone's advice. I think I'm a little closer to > picking one. I'll let everyon know what the manufacturers say. > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > -Original Message----- > From: Brad Waller [mailto:brad@;ep.com] > Sent: Wednesday, October 23, 2002 11:05 AM > To: [EMAIL PROTECTED] > Subject: RE: [Chevelle-List] SBC Cam selection > > > I would think that .467 lift is perfectly fine for the street. Of > course, all combinations will depend on your driving style and the car > setup. With your very stock setup, you don't want to go too far from > where you are. You could look at something like the Crane XE262 or > XE256 cam. They sound smaller, but they are more aggressive than what > you have, and the lift is still tame. Both will give you great bottom > end grunt. > > XE256 (I/E) lift .447/.454 duration 256/268 > XE262 (I/E) lift .462/.469 duration 262/270 > > Talk to the Crane Tech line and see what they have to > recommend, as well > as if they have anything to say about your current cam issues. Is it > under warranty? > > Brad Waller ([EMAIL PROTECTED]) > '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs > '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED] - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
RE: [Chevelle-List] SBC Cam selection
You're right, I don't know why I thought the XE cams were crane. I was looking for cams similar to yours and must have got stuck in my mind that I was looking at Crane. I have Dyno2000 and lots of cam and head flow files, so I can run a quick simulation if you want. These are usually optimistic, and don't go into full detail, but they can usually tell you if you are heading in the right direction with a single change (cam or head). Brad > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net] On Behalf Of Brian Zack > Sent: Wednesday, October 23, 2002 10:19 AM > To: '[EMAIL PROTECTED]' > Subject: RE: [Chevelle-List] SBC Cam selection > > > Aren't the extreme energy the comp cams line? I think it > would be under > warranty. But, I bought it through Summit and we moved since > I bought it and > I cant find the paperwork. So, I guess I'm outta luck. Also, > I think the XE > cams require a spring change. I'll stop bugging all and give > a call to crane > and comp. Thanks to everyone's advice. I think I'm a little closer to > picking one. I'll let everyon know what the manufacturers say. > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > -Original Message- > From: Brad Waller [mailto:brad@;ep.com] > Sent: Wednesday, October 23, 2002 11:05 AM > To: [EMAIL PROTECTED] > Subject: RE: [Chevelle-List] SBC Cam selection > > > I would think that .467 lift is perfectly fine for the street. Of > course, all combinations will depend on your driving style and the car > setup. With your very stock setup, you don't want to go too far from > where you are. You could look at something like the Crane XE262 or > XE256 cam. They sound smaller, but they are more aggressive than what > you have, and the lift is still tame. Both will give you great bottom > end grunt. > > XE256 (I/E) lift .447/.454 duration 256/268 > XE262 (I/E) lift .462/.469 duration 262/270 > > Talk to the Crane Tech line and see what they have to > recommend, as well > as if they have anything to say about your current cam issues. Is it > under warranty? > > Brad Waller ([EMAIL PROTECTED]) > '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs > '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
RE: [Chevelle-List] SBC Cam selection
Agrred. Plus, it's just not worth the hassle to try and
get them to warranty.
Brian Zack'70 Chevelle
Malibumailto:[EMAIL PROTECTED]
-Original Message-From: Capt Crunch
[mailto:[EMAIL PROTECTED]]Sent: Wednesday, October 23, 2002
12:29 PMTo: [EMAIL PROTECTED]Subject: Re:
[Chevelle-List] SBC Cam selection
I have never heard or seen of a cam manufacturer replacing a cam under
warranty. Most of them are pretty strict with their policy because about 95%
of all cam problems are due to improper installation, bad geometry, or other
non-camshaft (it's self) problem.
Mikey
- Original Message -
From:
Brian Zack
Sent: Wednesday, October 23, 2002 12:20
PM
To: '[EMAIL PROTECTED]'
Subject: RE: [Chevelle-List] SBC Cam
selection
Aren't the extreme energy the comp cams line? I think it
would be underwarranty. But, I bought it through Summit and we moved
since I bought it andI cant find the paperwork. So, I guess I'm outta
luck. Also, I think the XEcams require a spring change. I'll stop
bugging all and give a call to craneand comp. Thanks to everyone's
advice. I think I'm a little closer topicking one. I'll let everyon know
what the manufacturers say.Brian Zack'70 Chevelle
Malibumailto:[EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection
I have never heard or seen of a cam manufacturer replacing a cam under warranty. Most of them are pretty strict with their policy because about 95% of all cam problems are due to improper installation, bad geometry, or other non-camshaft (it's self) problem. Mikey - Original Message - From: Brian Zack Sent: Wednesday, October 23, 2002 12:20 PM To: '[EMAIL PROTECTED]' Subject: RE: [Chevelle-List] SBC Cam selection Aren't the extreme energy the comp cams line? I think it would be underwarranty. But, I bought it through Summit and we moved since I bought it andI cant find the paperwork. So, I guess I'm outta luck. Also, I think the XEcams require a spring change. I'll stop bugging all and give a call to craneand comp. Thanks to everyone's advice. I think I'm a little closer topicking one. I'll let everyon know what the manufacturers say.Brian Zack'70 Chevelle Malibumailto:[EMAIL PROTECTED]
RE: [Chevelle-List] SBC Cam selection
Aren't the extreme energy the comp cams line? I think it would be under warranty. But, I bought it through Summit and we moved since I bought it and I cant find the paperwork. So, I guess I'm outta luck. Also, I think the XE cams require a spring change. I'll stop bugging all and give a call to crane and comp. Thanks to everyone's advice. I think I'm a little closer to picking one. I'll let everyon know what the manufacturers say. Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: Brad Waller [mailto:brad@;ep.com] Sent: Wednesday, October 23, 2002 11:05 AM To: [EMAIL PROTECTED] Subject: RE: [Chevelle-List] SBC Cam selection I would think that .467 lift is perfectly fine for the street. Of course, all combinations will depend on your driving style and the car setup. With your very stock setup, you don't want to go too far from where you are. You could look at something like the Crane XE262 or XE256 cam. They sound smaller, but they are more aggressive than what you have, and the lift is still tame. Both will give you great bottom end grunt. XE256 (I/E) lift .447/.454 duration 256/268 XE262 (I/E) lift .462/.469 duration 262/270 Talk to the Crane Tech line and see what they have to recommend, as well as if they have anything to say about your current cam issues. Is it under warranty? Brad Waller ([EMAIL PROTECTED]) '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net] On Behalf Of Brian Zack > Sent: Wednesday, October 23, 2002 9:16 AM > To: '[EMAIL PROTECTED]' > Subject: RE: [Chevelle-List] SBC Cam selection > > > Is a .467 lift too large for the street? Thanks for the > replies. I dont > want to go too big. I know if I had considered going up to > say .480 I would > probably kill my driveability and low end torque and be over > camming it. I > guess I'll call Comp. cams and/or Crane cams and talk with > them to answer > any more recommendations or things to beware of. Tom, Did you > get the cam > specs on your Cutlass? > > > > > -Original Message----- > From: Don [mailto:doverpeck@;cinci.rr.com] > Sent: Wednesday, October 23, 2002 10:04 AM > To: [EMAIL PROTECTED] > Subject: Re: [Chevelle-List] SBC Cam selection > > > > Just be careful Brian. The number 1 mistake street engine > builders make is > to over-cam & over-carburate. > Don > > > > I am considering doing the cam change because ever since I built the > engine > > about a year ago, the new crane cam and lifters will > clatter and tap every > > so often and I'm not sure if this could be damaging the cam > lobes too or > > not. I have tried re-adjusting the valves 2 or 3 times and > it seems to go > > away for a little bit then comes back. I have tried > different amount of > > turns starting at 1/2 turn after clattering stops and am > now between 3/4 > to > > 1 turn. I have also tries marvel mystery oil to see if that > would help a > > sticking lifter. No help. Being a daily driver, I can only > alow a weekend > > down time and dont want to just buy lifters and then get > into it and find > > out the cam is going bad too and not be able to get another > one right > away. > > I know eventually, a bigger stall converter (and tranny > cooler at the same > > time) will help my seat of the pants feel. I did a mild > polishing of the > > ports on the redone heads when I built it. I also want to > eventually > change > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You > know that with > the > > horsepower bug, you always want just a little more and still keep it > > streetable. ; ). Any other comments would be appreciated. > > Thanks > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > -Original Message- > > From: Dave Studly [mailto:chevelle@;studly.net] > > Sent: Tuesday, October 22, 2002 9:00 PM > > To: [EMAIL PROTECTED] > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > Brian, > > > > I'm no expert, but it almost sounds like you're splitting > hairs. You > > mention the car being a daily driver, so I'm gonna assume > you're not drag > > racing it much. Adding .015-inch of lift is going to be > difficult to feel > > in the seat of your pants. Have you thought about switching to 1.6 > rockers > > instead? If you have .440
RE: [Chevelle-List] SBC Cam selection
I would think that .467 lift is perfectly fine for the street. Of course, all combinations will depend on your driving style and the car setup. With your very stock setup, you dont want to go too far from where you are. You could look at something like the Crane XE262 or XE256 cam. They sound smaller, but they are more aggressive than what you have, and the lift is still tame. Both will give you great bottom end grunt. XE256 (I/E) lift .447/.454 duration 256/268 XE262 (I/E) lift .462/.469 duration 262/270 Talk to the Crane Tech line and see what they have to recommend, as well as if they have anything to say about your current cam issues. Is it under warranty? Brad Waller ([EMAIL PROTECTED]) '66 Corvette | 327/dead | 4-speed | Wilwood Brakes | 245/45/16 BFGs '67 Chevelle | ex-SS396 | 355/700R4 | '79 F-Body Brakes > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net] On Behalf Of Brian Zack > Sent: Wednesday, October 23, 2002 9:16 AM > To: '[EMAIL PROTECTED]' > Subject: RE: [Chevelle-List] SBC Cam selection > > > Is a .467 lift too large for the street? Thanks for the > replies. I dont > want to go too big. I know if I had considered going up to > say .480 I would > probably kill my driveability and low end torque and be over > camming it. I > guess I'll call Comp. cams and/or Crane cams and talk with > them to answer > any more recommendations or things to beware of. Tom, Did you > get the cam > specs on your Cutlass? > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > > -Original Message- > From: Don [mailto:doverpeck@;cinci.rr.com] > Sent: Wednesday, October 23, 2002 10:04 AM > To: [EMAIL PROTECTED] > Subject: Re: [Chevelle-List] SBC Cam selection > > > > Just be careful Brian. The number 1 mistake street engine > builders make is > to over-cam & over-carburate. > Don > > > > I am considering doing the cam change because ever since I built the > engine > > about a year ago, the new crane cam and lifters will > clatter and tap every > > so often and I'm not sure if this could be damaging the cam > lobes too or > > not. I have tried re-adjusting the valves 2 or 3 times and > it seems to go > > away for a little bit then comes back. I have tried > different amount of > > turns starting at 1/2 turn after clattering stops and am > now between 3/4 > to > > 1 turn. I have also tries marvel mystery oil to see if that > would help a > > sticking lifter. No help. Being a daily driver, I can only > alow a weekend > > down time and dont want to just buy lifters and then get > into it and find > > out the cam is going bad too and not be able to get another > one right > away. > > I know eventually, a bigger stall converter (and tranny > cooler at the same > > time) will help my seat of the pants feel. I did a mild > polishing of the > > ports on the redone heads when I built it. I also want to > eventually > change > > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You > know that with > the > > horsepower bug, you always want just a little more and still keep it > > streetable. ; ). Any other comments would be appreciated. > > Thanks > > > > Brian Zack > > '70 Chevelle Malibu > > mailto:brianz@;dpsabq.com > > > > > > -Original Message- > > From: Dave Studly [mailto:chevelle@;studly.net] > > Sent: Tuesday, October 22, 2002 9:00 PM > > To: [EMAIL PROTECTED] > > Subject: RE: [Chevelle-List] SBC Cam selection > > > > > > Brian, > > > > I'm no expert, but it almost sounds like you're splitting > hairs. You > > mention the car being a daily driver, so I'm gonna assume > you're not drag > > racing it much. Adding .015-inch of lift is going to be > difficult to feel > > in the seat of your pants. Have you thought about switching to 1.6 > rockers > > instead? If you have .440 lift now with stock (1.5) > rockers, swapping to > > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * > 1.6). This > also > > adds a few degrees of duration. A *much* easier swap than a cam. > > > > I dont think you'll really want a cam with more than .470 > lift and ~225 > > degrees duration (@ .050") with a stock converter. You > should be able to > > get away with stock valve springs in all of these cases. > Don't quote me > on > > that last part, though. > > > > You have a pretty well-matched combo for low-mid torque.
RE: [Chevelle-List] SBC Cam selection
Is a .467 lift too large for the street? Thanks for the replies. I dont want to go too big. I know if I had considered going up to say .480 I would probably kill my driveability and low end torque and be over camming it. I guess I'll call Comp. cams and/or Crane cams and talk with them to answer any more recommendations or things to beware of. Tom, Did you get the cam specs on your Cutlass? Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: Don [mailto:doverpeck@;cinci.rr.com] Sent: Wednesday, October 23, 2002 10:04 AM To: [EMAIL PROTECTED] Subject: Re: [Chevelle-List] SBC Cam selection Just be careful Brian. The number 1 mistake street engine builders make is to over-cam & over-carburate. Don > I am considering doing the cam change because ever since I built the engine > about a year ago, the new crane cam and lifters will clatter and tap every > so often and I'm not sure if this could be damaging the cam lobes too or > not. I have tried re-adjusting the valves 2 or 3 times and it seems to go > away for a little bit then comes back. I have tried different amount of > turns starting at 1/2 turn after clattering stops and am now between 3/4 to > 1 turn. I have also tries marvel mystery oil to see if that would help a > sticking lifter. No help. Being a daily driver, I can only alow a weekend > down time and dont want to just buy lifters and then get into it and find > out the cam is going bad too and not be able to get another one right away. > I know eventually, a bigger stall converter (and tranny cooler at the same > time) will help my seat of the pants feel. I did a mild polishing of the > ports on the redone heads when I built it. I also want to eventually change > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with the > horsepower bug, you always want just a little more and still keep it > streetable. ; ). Any other comments would be appreciated. > Thanks > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > -Original Message- > From: Dave Studly [mailto:chevelle@;studly.net] > Sent: Tuesday, October 22, 2002 9:00 PM > To: [EMAIL PROTECTED] > Subject: RE: [Chevelle-List] SBC Cam selection > > > Brian, > > I'm no expert, but it almost sounds like you're splitting hairs. You > mention the car being a daily driver, so I'm gonna assume you're not drag > racing it much. Adding .015-inch of lift is going to be difficult to feel > in the seat of your pants. Have you thought about switching to 1.6 rockers > instead? If you have .440 lift now with stock (1.5) rockers, swapping to > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This also > adds a few degrees of duration. A *much* easier swap than a cam. > > I dont think you'll really want a cam with more than .470 lift and ~225 > degrees duration (@ .050") with a stock converter. You should be able to > get away with stock valve springs in all of these cases. Don't quote me on > that last part, though. > > You have a pretty well-matched combo for low-mid torque. Carb tuning (using > a dragstrip or dyno to verify your results) can make a noticeable difference > in power and mileage if you haven't done so. It's not glorious like a new > cam, but it can be just as rewarding in the end. > > As an aside, I was just at the dragstrip this past sunday and a friend was > there with his 90's LT-1 Roadmaster station wagon. He upgraded the exhaust > which killed the good low-end torque he had (motor is stock, except for > slightly modded air box). To remedy that, he changed the torque converter > to one from a S-10 application (he estimated 2000-2100 stall, versus > 1200-1300 stock -- no tach to truly verify these numbers.) and picked up .8 > seconds in his quarter mile time and +5 MPH (it was also only in the high > 40s, low 50s temperature-wise). If you're not familiar with quarter mile > times, that's a *big* improvement. Getting the engine up into it's torque > band quicker makes all the difference in the world. > > As another personal aside, I ran my quickest and fastest on Sunday with my > 406-powered '70 -- 12.70 @ 107. I was pretty happy about that. If there's > one good thing about Ohio, it's low ETs in October! :-) > > Torque rules! > > -Dave > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Brian Zack > Sent: Tuesday, October 22, 2002 2:28 PM > To: Chevelle List (E-mail) > Subject: [Chevelle-List] SBC Cam selection > > > What is the largest cam any of you are running in a daily driver with a > small block
RE: [Chevelle-List] SBC Cam selection
The adjustment doesn't change. It is still where I set it, but it starts clattering more and I was trying other adjustments to try and see if it needed more since the adjustments I've read say 1/2 to 1 turn, so I thought I'd try that. I think the lifters are just not staying pumped up. I am wondering if it is doing any damage to the cam when it starts clattering. It is mostly when it is warmed up to around 200 degrees or more and it can be when it has anywhere between 20psi to 40 psi oil pressure (varies when in gear with foot on brake). The clattering will stop if I give it a little gas and it stays not clattering for a little while. That is why I say the lifters aren't staying pumped up. Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: Kent Lewis [mailto:z28ss43@;attbi.com] Sent: Wednesday, October 23, 2002 9:50 AM To: [EMAIL PROTECTED] Subject: Re: [Chevelle-List] SBC Cam selection Brian, If you keep "losing" the valve adjustment, perhaps a set of posi-locks would help. Kent '68 Malibu ZZ502/502 ACES #5102 - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED] - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection
Just be careful Brian. The number 1 mistake street engine builders make is to over-cam & over-carburate. Don > I am considering doing the cam change because ever since I built the engine > about a year ago, the new crane cam and lifters will clatter and tap every > so often and I'm not sure if this could be damaging the cam lobes too or > not. I have tried re-adjusting the valves 2 or 3 times and it seems to go > away for a little bit then comes back. I have tried different amount of > turns starting at 1/2 turn after clattering stops and am now between 3/4 to > 1 turn. I have also tries marvel mystery oil to see if that would help a > sticking lifter. No help. Being a daily driver, I can only alow a weekend > down time and dont want to just buy lifters and then get into it and find > out the cam is going bad too and not be able to get another one right away. > I know eventually, a bigger stall converter (and tranny cooler at the same > time) will help my seat of the pants feel. I did a mild polishing of the > ports on the redone heads when I built it. I also want to eventually change > to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with the > horsepower bug, you always want just a little more and still keep it > streetable. ; ). Any other comments would be appreciated. > Thanks > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > -Original Message- > From: Dave Studly [mailto:chevelle@;studly.net] > Sent: Tuesday, October 22, 2002 9:00 PM > To: [EMAIL PROTECTED] > Subject: RE: [Chevelle-List] SBC Cam selection > > > Brian, > > I'm no expert, but it almost sounds like you're splitting hairs. You > mention the car being a daily driver, so I'm gonna assume you're not drag > racing it much. Adding .015-inch of lift is going to be difficult to feel > in the seat of your pants. Have you thought about switching to 1.6 rockers > instead? If you have .440 lift now with stock (1.5) rockers, swapping to > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This also > adds a few degrees of duration. A *much* easier swap than a cam. > > I dont think you'll really want a cam with more than .470 lift and ~225 > degrees duration (@ .050") with a stock converter. You should be able to > get away with stock valve springs in all of these cases. Don't quote me on > that last part, though. > > You have a pretty well-matched combo for low-mid torque. Carb tuning (using > a dragstrip or dyno to verify your results) can make a noticeable difference > in power and mileage if you haven't done so. It's not glorious like a new > cam, but it can be just as rewarding in the end. > > As an aside, I was just at the dragstrip this past sunday and a friend was > there with his 90's LT-1 Roadmaster station wagon. He upgraded the exhaust > which killed the good low-end torque he had (motor is stock, except for > slightly modded air box). To remedy that, he changed the torque converter > to one from a S-10 application (he estimated 2000-2100 stall, versus > 1200-1300 stock -- no tach to truly verify these numbers.) and picked up .8 > seconds in his quarter mile time and +5 MPH (it was also only in the high > 40s, low 50s temperature-wise). If you're not familiar with quarter mile > times, that's a *big* improvement. Getting the engine up into it's torque > band quicker makes all the difference in the world. > > As another personal aside, I ran my quickest and fastest on Sunday with my > 406-powered '70 -- 12.70 @ 107. I was pretty happy about that. If there's > one good thing about Ohio, it's low ETs in October! :-) > > Torque rules! > > -Dave > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Brian Zack > Sent: Tuesday, October 22, 2002 2:28 PM > To: Chevelle List (E-mail) > Subject: [Chevelle-List] SBC Cam selection > > > What is the largest cam any of you are running in a daily driver with a > small block 350. I have a '70 Chevelle Malibu with a 350 4-bolt main, > cast pistons, 9:1 compression stock heads, edlebrock performer manifold > edlebrock 600 cfm carb, 1 5/8" headers, and dual 2" exhaust. It also has the > stock stall converter and I think either 2:73 ot 3:07 gears ( I have to > verify that) Right now I have a crane energizer 266H which is 266 duration > and .440 lift. I am going to be changing to a larger cam and was wondering > what max. size anyone might recommend. I was thinking of of the crane > energizer w/ .467 lift or the crane energizer with .454 lift. But, I dont >
Re: [Chevelle-List] SBC Cam selection
Brian, If you keep "losing" the valve adjustment, perhaps a set of posi-locks would help. Kent '68 Malibu ZZ502/502 ACES #5102 - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
RE: [Chevelle-List] SBC Cam selection
I am considering doing the cam change because ever since I built the engine about a year ago, the new crane cam and lifters will clatter and tap every so often and I'm not sure if this could be damaging the cam lobes too or not. I have tried re-adjusting the valves 2 or 3 times and it seems to go away for a little bit then comes back. I have tried different amount of turns starting at 1/2 turn after clattering stops and am now between 3/4 to 1 turn. I have also tries marvel mystery oil to see if that would help a sticking lifter. No help. Being a daily driver, I can only alow a weekend down time and dont want to just buy lifters and then get into it and find out the cam is going bad too and not be able to get another one right away. I know eventually, a bigger stall converter (and tranny cooler at the same time) will help my seat of the pants feel. I did a mild polishing of the ports on the redone heads when I built it. I also want to eventually change to 2 1/2" exhaust and maybe 3:23(?) or 3:50(?) gears. You know that with the horsepower bug, you always want just a little more and still keep it streetable. ; ). Any other comments would be appreciated. Thanks Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: Dave Studly [mailto:chevelle@;studly.net] Sent: Tuesday, October 22, 2002 9:00 PM To: [EMAIL PROTECTED] Subject: RE: [Chevelle-List] SBC Cam selection Brian, I'm no expert, but it almost sounds like you're splitting hairs. You mention the car being a daily driver, so I'm gonna assume you're not drag racing it much. Adding .015-inch of lift is going to be difficult to feel in the seat of your pants. Have you thought about switching to 1.6 rockers instead? If you have .440 lift now with stock (1.5) rockers, swapping to 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This also adds a few degrees of duration. A *much* easier swap than a cam. I dont think you'll really want a cam with more than .470 lift and ~225 degrees duration (@ .050") with a stock converter. You should be able to get away with stock valve springs in all of these cases. Don't quote me on that last part, though. You have a pretty well-matched combo for low-mid torque. Carb tuning (using a dragstrip or dyno to verify your results) can make a noticeable difference in power and mileage if you haven't done so. It's not glorious like a new cam, but it can be just as rewarding in the end. As an aside, I was just at the dragstrip this past sunday and a friend was there with his 90's LT-1 Roadmaster station wagon. He upgraded the exhaust which killed the good low-end torque he had (motor is stock, except for slightly modded air box). To remedy that, he changed the torque converter to one from a S-10 application (he estimated 2000-2100 stall, versus 1200-1300 stock -- no tach to truly verify these numbers.) and picked up .8 seconds in his quarter mile time and +5 MPH (it was also only in the high 40s, low 50s temperature-wise). If you're not familiar with quarter mile times, that's a *big* improvement. Getting the engine up into it's torque band quicker makes all the difference in the world. As another personal aside, I ran my quickest and fastest on Sunday with my 406-powered '70 -- 12.70 @ 107. I was pretty happy about that. If there's one good thing about Ohio, it's low ETs in October! :-) Torque rules! -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Brian Zack Sent: Tuesday, October 22, 2002 2:28 PM To: Chevelle List (E-mail) Subject: [Chevelle-List] SBC Cam selection What is the largest cam any of you are running in a daily driver with a small block 350. I have a '70 Chevelle Malibu with a 350 4-bolt main, cast pistons, 9:1 compression stock heads, edlebrock performer manifold edlebrock 600 cfm carb, 1 5/8" headers, and dual 2" exhaust. It also has the stock stall converter and I think either 2:73 ot 3:07 gears ( I have to verify that) Right now I have a crane energizer 266H which is 266 duration and .440 lift. I am going to be changing to a larger cam and was wondering what max. size anyone might recommend. I was thinking of of the crane energizer w/ .467 lift or the crane energizer with .454 lift. But, I dont think the smaller one would give me that much of a difference. I think I would have to change my springs though and probably the converter. Has anyone used a larger cam and not upped the converter? I would assume it would probably hurt mileage and not have that great of low speed torque. Any recommendations? Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED] -
Re: [Chevelle-List] SBC Cam selection
Watch Out!. You can not just switch to 1.6 rockers on most heads. The pushrods will be in a bind in the hole of the head. The pushrod hole in the head has to be cut for clearance when you switch to 1.6 rockers for most heads. Keith Cooper - Original Message - From: "Dave Studly" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, October 22, 2002 10:59 PM Subject: RE: [Chevelle-List] SBC Cam selection > Brian, > > I'm no expert, but it almost sounds like you're splitting hairs. You > mention the car being a daily driver, so I'm gonna assume you're not drag > racing it much. Adding .015-inch of lift is going to be difficult to feel > in the seat of your pants. Have you thought about switching to 1.6 rockers > instead? If you have .440 lift now with stock (1.5) rockers, swapping to > 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This also > adds a few degrees of duration. A *much* easier swap than a cam. > > I dont think you'll really want a cam with more than .470 lift and ~225 > degrees duration (@ .050") with a stock converter. You should be able to > get away with stock valve springs in all of these cases. Don't quote me on > that last part, though. > > You have a pretty well-matched combo for low-mid torque. Carb tuning (using > a dragstrip or dyno to verify your results) can make a noticeable difference > in power and mileage if you haven't done so. It's not glorious like a new > cam, but it can be just as rewarding in the end. > > As an aside, I was just at the dragstrip this past sunday and a friend was > there with his 90's LT-1 Roadmaster station wagon. He upgraded the exhaust > which killed the good low-end torque he had (motor is stock, except for > slightly modded air box). To remedy that, he changed the torque converter > to one from a S-10 application (he estimated 2000-2100 stall, versus > 1200-1300 stock -- no tach to truly verify these numbers.) and picked up .8 > seconds in his quarter mile time and +5 MPH (it was also only in the high > 40s, low 50s temperature-wise). If you're not familiar with quarter mile > times, that's a *big* improvement. Getting the engine up into it's torque > band quicker makes all the difference in the world. > > As another personal aside, I ran my quickest and fastest on Sunday with my > 406-powered '70 -- 12.70 @ 107. I was pretty happy about that. If there's > one good thing about Ohio, it's low ETs in October! :-) > > Torque rules! > > -Dave > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Brian Zack > Sent: Tuesday, October 22, 2002 2:28 PM > To: Chevelle List (E-mail) > Subject: [Chevelle-List] SBC Cam selection > > > What is the largest cam any of you are running in a daily driver with a > small block 350. I have a '70 Chevelle Malibu with a 350 4-bolt main, > cast pistons, 9:1 compression stock heads, edlebrock performer manifold > edlebrock 600 cfm carb, 1 5/8" headers, and dual 2" exhaust. It also has the > stock stall converter and I think either 2:73 ot 3:07 gears ( I have to > verify that) Right now I have a crane energizer 266H which is 266 duration > and .440 lift. I am going to be changing to a larger cam and was wondering > what max. size anyone might recommend. I was thinking of of the crane > energizer w/ .467 lift or the crane energizer with .454 lift. But, I dont > think the smaller one would give me that much of a difference. I think I > would have to change my springs though and probably the converter. Has > anyone used a larger cam and not upped the converter? I would assume it > would probably hurt mileage and not have that great of low speed torque. Any > recommendations? > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > > > - > To Unsubscribe please visit www.chevelles.net/list.html > To start a new topic, send mail to: [EMAIL PROTECTED] > > > - > To Unsubscribe please visit www.chevelles.net/list.html > To start a new topic, send mail to: [EMAIL PROTECTED] > - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
RE: [Chevelle-List] SBC Cam selection
Brian, I'm no expert, but it almost sounds like you're splitting hairs. You mention the car being a daily driver, so I'm gonna assume you're not drag racing it much. Adding .015-inch of lift is going to be difficult to feel in the seat of your pants. Have you thought about switching to 1.6 rockers instead? If you have .440 lift now with stock (1.5) rockers, swapping to 1.6 rockers will take you up to .469 lift ( (.440 / 1.5) * 1.6). This also adds a few degrees of duration. A *much* easier swap than a cam. I dont think you'll really want a cam with more than .470 lift and ~225 degrees duration (@ .050") with a stock converter. You should be able to get away with stock valve springs in all of these cases. Don't quote me on that last part, though. You have a pretty well-matched combo for low-mid torque. Carb tuning (using a dragstrip or dyno to verify your results) can make a noticeable difference in power and mileage if you haven't done so. It's not glorious like a new cam, but it can be just as rewarding in the end. As an aside, I was just at the dragstrip this past sunday and a friend was there with his 90's LT-1 Roadmaster station wagon. He upgraded the exhaust which killed the good low-end torque he had (motor is stock, except for slightly modded air box). To remedy that, he changed the torque converter to one from a S-10 application (he estimated 2000-2100 stall, versus 1200-1300 stock -- no tach to truly verify these numbers.) and picked up .8 seconds in his quarter mile time and +5 MPH (it was also only in the high 40s, low 50s temperature-wise). If you're not familiar with quarter mile times, that's a *big* improvement. Getting the engine up into it's torque band quicker makes all the difference in the world. As another personal aside, I ran my quickest and fastest on Sunday with my 406-powered '70 -- 12.70 @ 107. I was pretty happy about that. If there's one good thing about Ohio, it's low ETs in October! :-) Torque rules! -Dave -Original Message- From: [EMAIL PROTECTED] [mailto:owner-chevelle-list@;chevelles.net]On Behalf Of Brian Zack Sent: Tuesday, October 22, 2002 2:28 PM To: Chevelle List (E-mail) Subject: [Chevelle-List] SBC Cam selection What is the largest cam any of you are running in a daily driver with a small block 350. I have a '70 Chevelle Malibu with a 350 4-bolt main, cast pistons, 9:1 compression stock heads, edlebrock performer manifold edlebrock 600 cfm carb, 1 5/8" headers, and dual 2" exhaust. It also has the stock stall converter and I think either 2:73 ot 3:07 gears ( I have to verify that) Right now I have a crane energizer 266H which is 266 duration and .440 lift. I am going to be changing to a larger cam and was wondering what max. size anyone might recommend. I was thinking of of the crane energizer w/ .467 lift or the crane energizer with .454 lift. But, I dont think the smaller one would give me that much of a difference. I think I would have to change my springs though and probably the converter. Has anyone used a larger cam and not upped the converter? I would assume it would probably hurt mileage and not have that great of low speed torque. Any recommendations? Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED] - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection
I ran the 266/272 on a special centerline of 110. I then had the same cam on 108 C/L. To make a long story short, I was given a motor with the 262H cam on 112 centerline camshaft.All these grinds are from Crane Cams. The 262H has performed the best. I have same motor just forged pistons and a 2.50 or 2.73 read ratio. The larger cams did not run better because I needed to make other changes to the motor, which I did not and did not want to. I believe the real problem was the 2.5 rear ratio, poor heads( stock), converter in transmission (automatic). I would not go bigger on the cam unless you are ready to do other work and money. Bigger cams do not keep making the car go faster. Everything must work together to make it happen. I worked in the Crane Engineering dept. for many years, but still made the wrong camshaft selection on my car. Keith Cooper - Original Message - From: "Brian Zack" <[EMAIL PROTECTED]> To: "Chevelle List (E-mail)" <[EMAIL PROTECTED]> Sent: Tuesday, October 22, 2002 2:28 PM Subject: [Chevelle-List] SBC Cam selection > What is the largest cam any of you are running in a daily driver with a > small block 350. I have a '70 Chevelle Malibu with a 350 4-bolt main, > cast pistons, 9:1 compression stock heads, edlebrock performer manifold > edlebrock 600 cfm carb, 1 5/8" headers, and dual 2" exhaust. It also has the > stock stall converter and I think either 2:73 ot 3:07 gears ( I have to > verify that) Right now I have a crane energizer 266H which is 266 duration > and .440 lift. I am going to be changing to a larger cam and was wondering > what max. size anyone might recommend. I was thinking of of the crane > energizer w/ .467 lift or the crane energizer with .454 lift. But, I dont > think the smaller one would give me that much of a difference. I think I > would have to change my springs though and probably the converter. Has > anyone used a larger cam and not upped the converter? I would assume it > would probably hurt mileage and not have that great of low speed torque. Any > recommendations? > > Brian Zack > '70 Chevelle Malibu > mailto:brianz@;dpsabq.com > > > > > - > To Unsubscribe please visit www.chevelles.net/list.html > To start a new topic, send mail to: [EMAIL PROTECTED] > - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
RE: [Chevelle-List] SBC Cam selection
Great! I'm looking forward to seeing what cam specs you have. Did you have to change the stock valve springs? Thanks. Brian Zack '70 Chevelle Malibu mailto:brianz@;dpsabq.com -Original Message- From: [EMAIL PROTECTED] [mailto:MICRLASER@;aol.com] Sent: Tuesday, October 22, 2002 2:49 PM To: [EMAIL PROTECTED] Subject: Re: [Chevelle-List] SBC Cam selection Brian, the setup I have in my 86 Cutlass works out very well with the stock converter. I will email you my cam specs when I get home. The motor in that car is a 69 350 block, stock heads, 9.5:1 CR, same headers you have, but i run 2 1/4" duals on the Cutlass and I also have a 3.42 rear ratio. It was enough to push the car well into the mid-low 14's at the track on street tires. I pretty much have the biggest cam you can get away woth when using a stock converter, anything more would start making it slip and lose vacuum, and I'm not sure about anyone else, but I like my power brakes working :-). Tom - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED] - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
Re: [Chevelle-List] SBC Cam selection
Brian, the setup I have in my 86 Cutlass works out very well with the stock converter. I will email you my cam specs when I get home. The motor in that car is a 69 350 block, stock heads, 9.5:1 CR, same headers you have, but i run 2 1/4" duals on the Cutlass and I also have a 3.42 rear ratio. It was enough to push the car well into the mid-low 14's at the track on street tires. I pretty much have the biggest cam you can get away woth when using a stock converter, anything more would start making it slip and lose vacuum, and I'm not sure about anyone else, but I like my power brakes working :-). Tom - To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
