Re: [Chevelle-list] Exhaust System-Dyno Run
Title: Message That is so true Ron! When my motor man called and said "it's time", I drove to his shop like a madman! I walked in with a digital camera and video camera with a big smile on my face. I haven't built an engine since the mid 70's. Although I double-checked everything, there is always that little doubt until that engine fires up. Although I was hoping for a bit more power, I'm sure it will be plenty for my purpose... and I just love that lope... Larry Shouse - Original Message - From: Ron Sparks To: 'The Chevelle Mailing List' Sent: Tuesday, November 29, 2005 10:35 PM Subject: RE: [Chevelle-list] Exhaust System-Dyno Run my wife was standing behind me when I was playing the videos. I explained to her it was like watching a new baby coming into the world. She shook her head and walked away... :-) From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry ShouseSent: Tuesday, November 29, 2005 7:36 PMTo: The Chevelle Mailing ListSubject: Re: [Chevelle-list] Exhaust System-Dyno Run Clint, Everything you said about my engine is correct except I did go with hydraulic roller lifters and roller rockers. My motor man told me to set redline at 6800rpm. I had my dyno run today, and you are right. It did make peak power at 6000rpm. 442hp @ 6000rpm 467fp @ 4250rpm Just a point of interest, airflow was 720.3 scfm @ 6250rpm, which is as high as they went. What does the "s" in front of the cfm stand for? Videos - www.fuglybrothers.com/videos/dyno-setup.wmv www.fuglybrothers.com/videos/dyno-run.wmv Larry - Original Message - From: Clint Hooper To: The Chevelle Mailing List Sent: Tuesday, November 29, 2005 8:49 PM Subject: Re: [Chevelle-list] Exhaust System You guys have to remember that Larry's car isn't running a hyd lifter,oval port big block but a solid lifter,forged piston,four bolt main L78. Those things will easily rev to 7,000rpm and make their peak power well over 6,000rpm. It can handle a higher flow exhaust. I suggested 2.5" tailpipes because the exhaust velocity is reduced enough that the extra expense and more noise of 3" tailpipes isn't necessary on a BBC less than 427ci. The smaller tailpipes will help the low-end torque curve a noticeable amount and reduce the drone. Very few streetable 400ci small blocks will have cylinder heads that can flow like L78 BBC's. Clint HooperH&H Custom,owner1969 El Camino ProTourer2001 H-D FLHR custom baggerhttp://dalesplace.com/misc/friends/clint/clint_hooper.htm
RE: [Chevelle-list] Exhaust System-Dyno Run
Title: Message my wife was standing behind me when I was playing the videos. I explained to her it was like watching a new baby coming into the world. She shook her head and walked away... :-) From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry ShouseSent: Tuesday, November 29, 2005 7:36 PMTo: The Chevelle Mailing ListSubject: Re: [Chevelle-list] Exhaust System-Dyno Run Clint, Everything you said about my engine is correct except I did go with hydraulic roller lifters and roller rockers. My motor man told me to set redline at 6800rpm. I had my dyno run today, and you are right. It did make peak power at 6000rpm. 442hp @ 6000rpm 467fp @ 4250rpm Just a point of interest, airflow was 720.3 scfm @ 6250rpm, which is as high as they went. What does the "s" in front of the cfm stand for? Videos - www.fuglybrothers.com/videos/dyno-setup.wmv www.fuglybrothers.com/videos/dyno-run.wmv Larry - Original Message - From: Clint Hooper To: The Chevelle Mailing List Sent: Tuesday, November 29, 2005 8:49 PM Subject: Re: [Chevelle-list] Exhaust System You guys have to remember that Larry's car isn't running a hyd lifter,oval port big block but a solid lifter,forged piston,four bolt main L78. Those things will easily rev to 7,000rpm and make their peak power well over 6,000rpm. It can handle a higher flow exhaust. I suggested 2.5" tailpipes because the exhaust velocity is reduced enough that the extra expense and more noise of 3" tailpipes isn't necessary on a BBC less than 427ci. The smaller tailpipes will help the low-end torque curve a noticeable amount and reduce the drone. Very few streetable 400ci small blocks will have cylinder heads that can flow like L78 BBC's. Clint HooperH&H Custom,owner1969 El Camino ProTourer2001 H-D FLHR custom baggerhttp://dalesplace.com/misc/friends/clint/clint_hooper.htm
Re: [Chevelle-list] Exhaust System-Dyno Run
Title: Message Clint, Everything you said about my engine is correct except I did go with hydraulic roller lifters and roller rockers. My motor man told me to set redline at 6800rpm. I had my dyno run today, and you are right. It did make peak power at 6000rpm. 442hp @ 6000rpm 467fp @ 4250rpm Just a point of interest, airflow was 720.3 scfm @ 6250rpm, which is as high as they went. What does the "s" in front of the cfm stand for? Videos - www.fuglybrothers.com/videos/dyno-setup.wmv www.fuglybrothers.com/videos/dyno-run.wmv Larry - Original Message - From: Clint Hooper To: The Chevelle Mailing List Sent: Tuesday, November 29, 2005 8:49 PM Subject: Re: [Chevelle-list] Exhaust System You guys have to remember that Larry's car isn't running a hyd lifter,oval port big block but a solid lifter,forged piston,four bolt main L78. Those things will easily rev to 7,000rpm and make their peak power well over 6,000rpm. It can handle a higher flow exhaust. I suggested 2.5" tailpipes because the exhaust velocity is reduced enough that the extra expense and more noise of 3" tailpipes isn't necessary on a BBC less than 427ci. The smaller tailpipes will help the low-end torque curve a noticeable amount and reduce the drone. Very few streetable 400ci small blocks will have cylinder heads that can flow like L78 BBC's. Clint HooperH&H Custom,owner1969 El Camino ProTourer2001 H-D FLHR custom baggerhttp://dalesplace.com/misc/friends/clint/clint_hooper.htm
Re: [Chevelle-list] 3.73 or 4.56?
No way would I run 4.56 cogs with your engine/trans combo,Jim. It would be overgeared a bunch. Even 3.73's are a marginal highway gear. For a little more money,install a 200R4 or 700R4 with your present rear. Best of both worlds. Clint Hooper H&H Custom,owner 1969 El Camino ProTourer 2001 H-D FLHR custom bagger http://dalesplace.com/misc/friends/clint/clint_hooper.htm - Original Message - To: "The Chevelle Mailing List" > OK folks, > I have the opportunity to use 3.73 or 4.56 gears in > the 10-bolt posi I'm going to put in the '66. The car > has a 300+/-HP 327 and PG. Anyone have any thoughts > or previous experience with the 4.56 gears and the > PG/small block setup? > I drive the car to local shows, and want to be able to > take it to Cecil on occasion. A relative told me to > do the 4.56s and nothing less, thus my indecision. > Thanks, > Jim
Re: [Chevelle-list] Exhaust System
Title: Message You guys have to remember that Larry's car isn't running a hyd lifter,oval port big block but a solid lifter,forged piston,four bolt main L78. Those things will easily rev to 7,000rpm and make their peak power well over 6,000rpm. It can handle a higher flow exhaust. I suggested 2.5" tailpipes because the exhaust velocity is reduced enough that the extra expense and more noise of 3" tailpipes isn't necessary on a BBC less than 427ci. The smaller tailpipes will help the low-end torque curve a noticeable amount and reduce the drone. Very few streetable 400ci small blocks will have cylinder heads that can flow like L78 BBC's. Clint HooperH&H Custom,owner1969 El Camino ProTourer2001 H-D FLHR custom baggerhttp://dalesplace.com/misc/friends/clint/clint_hooper.htm
RE: [Chevelle-list] Exhaust System
Title: Message I know that a well built header will use the exhaust from one cylinder to scavenge the others, but I'm not sure about how the exhaust system itself can or will do that, I thought that once past the collector it was only a matter of getting rid of the exhaust. there was an article in a magazine about an instrument measurng exhaust backpressure and as I remember it it was all a matter the lowest pressure possible. I dont think I'd use a step down in tube size, the entire system wont flow more than the smallest tube anyway. Maybe Clint tought of that because of the lower restriction restriction of the bigger muffler. Have FunAndré -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry ShouseSent: 29. november 2005 14:49To: The Chevelle Mailing ListSubject: Re: [Chevelle-list] Exhaust System Thanks to everyone for your input. I spent a few hours going to all suggested websites, trying to learn what I can. Personal experience based input is very important to me. It looks like we are pretty evenly split between 2.5 and 3 inch exhaust systems. I've heard (and please correct me if I'm wrong) that having too much pipe could be detrimental to your torque numbers, because you need a certain amount of back pressure to scavenge (pull) the exhaust out... I guess the real question then becomes does my 396 with a Performer RPM Airgap intake and L78 heads redlining at 6500 - 6800 rpm move enough air to warrant 3 inch pipes. Is there a formula out there to figure that kind of thing out? Of course I'm willing to pay for the 3 inch system if it sounds better and has no detrimental effect on my numbers I found Clint's comments interesting, using 2" head pipes and reducing down to 2.5" after the muffler... Thanks for putting up with my persistent stream of questions here. As I dump all available dollars into this project while dodging my wife's broom, I want to keep my future regrets to a minimum. Thanks, Larry Shouse - Original Message - From: Larry Shouse To: Chevelle List Sent: Monday, November 28, 2005 4:06 PM Subject: [Chevelle-list] Exhaust System It's time to buy me an exhaust system. The system will go on a fairly healthy normally aspirated 396 running L78 heads and Sanderson intermediate headers with 1 7/8" primaries and 3" collectors. Those of you in the know, please help me decide whether I should go with a 2.5" system or a 3" system. Also, brand suggestions would be great. Thanks, Larry Shouse
RE: [Chevelle-list] 3.73 or 4.56?
Title: Message I'll go with a 4,1 together with the 0,5 in my six speed, that makes 2,05 in sixt gear :o) that and enough power could make it go FAST a five or six speed is the best of both worlds, acceleration and topspeed/low rpm cruising Have FunAndré -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]Sent: 29. november 2005 15:20To: Chevelle-list@chevelles.netSubject: Re: [Chevelle-list] 3.73 or 4.56? Hi Jim: I've heard what everyone said & I agree with most. I've got a pretty healthy 327 in a 65 SS with a M-20 4 speed, a 12 bolt & 3.73 gears. I'm running Coker 75 series redline tires about 28 inches high. It's great in town, the suburbs & back roads. On the highway at 60-65 I'm taching 3000-3200 rpms & people are blowing me off the road. I try to drive non-highway as much as possible. I also drag race it a few time a season. The future may include a 5 or 6 speed. It's mainly a show car & a cruiser. The max its been on the road is 100 miles one way. The Flowmasters are singing all the way!! It's noisy! If you plan little or no highway use & will be driving mostly in town & around, with an occasional trip to the drags, you could get away with the 4.56. If you plan to cruise & put it on the road stay away. Go with the 3.55-3.73. The 3.73 is about the most versitile and that's stretching it. Use the ratio that will best fit what your plans are for the car. Be realistic. With a 4.56 you may have to trailer to some events as necessary. I enjoy driving my car & am not interested in burning out my engine prematurely. Those 5 & 6 speeds with the .8 & .6 gears are looking better every year!! Good luck with your decision & Happy Cruising!!! Phil G. 65 SS -Original Message-From: J. Brady <[EMAIL PROTECTED]>To: Chevelle Group Sent: Mon, 28 Nov 2005 13:24:17 -0800 (PST)Subject: [Chevelle-list] 3.73 or 4.56? OK folks, I have the opportunity to use 3.73 or 4.56 gears in the 10-bolt posi I'm going to put in the '66. The car has a 300+/-HP 327 and PG. Anyone have any thoughts or previous experience with the 4.56 gears and the PG/small block setup? I drive the car to local shows, and want to be able to take it to Cecil on occasion. A relative told me to do the 4.56s and nothing less, thus my indecision. Thanks, Jim __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com
[Chevelle-list] Global West Catalog
Just wanted to let you all knowfor those of you that didn't. That global west has a new catalog wth lots of new stuff. I was talking to Joe there today about my 71 and he said he would send me a new catalog today...FREE. He even admitted that their website has not been updated in a long time and their catalog has a lot of new parts that are not even on the website. Just wanted to let yall knowbecause i didn't until today. Happy Holidays Kyle
Re: [Chevelle-list] New hood :-)
4.56 is good for in town only. i have 3.73 its good all around gear. good luck Eddie bumgarner.Pelle Andersson <[EMAIL PROTECTED]> wrote: Got my new "domed" hood yesterday!It's from Danschuk. Do they manufacture the hoodsor are they made by someone else?Looks great :-)B.R. Pelle- Original Message - From: "Ron Sparks" <[EMAIL PROTECTED]>To: "'The Chevelle Mailing List'" Sent: Tuesday, November 29, 2005 5:54 AMSubject: RE: [Chevelle-list] 3.73 or 4.56?>I had 4.11's once behind a 4 speed and a 327 and hated driving the thing on> the highway. I'm not sure what the gears are in your PG but I'm not sure> it'd be any more enjoyable.>> It all comes down to usage and what you want. If you want to drive it, I'd> go with a higher ratio.>> -Original Message-> From: [EMAIL PROTECTED]> [mailto:[EMAIL PROTECTED] On Behalf Of J. Brady> Sent: Monday, November 28, 2005 2:24 PM> To: Chevelle Group> Subject: [Chevelle-list] 3.73 or 4.56?>> OK folks,>> I have the opportunity to use 3.73 or 4.56 gears in the 10-bolt posi I'm> going to put in the '66. The car has a 300+/-HP 327 and PG. Anyone have> any thoughts or previous experience with the 4.56 gears and the PG/small> block setup?>> I drive the car to local shows, and want to be able to take it to Cecil on> occasion. A relative told me to do the 4.56s and nothing less, thus my> indecision.>> Thanks,>> Jim>> __> Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com>>> Yahoo! Personals Single? There's someone we'd like you to meet. Lots of someones, actually. Yahoo! Personals
Re: [Chevelle-list] Exhaust System
Right on Craig, Many mags have put the bigger/better idea out there. You have to have 4.10/4.11's big carbs and exhaust to make powerNo not for the street/strip guys. Look at your overall package and spend from there. Walt http://www.personal.kent.edu/~wbainey/CHEVELLE.htm - Original Message - From: Craig Ellis <[EMAIL PROTECTED]> Date: Tuesday, November 29, 2005 9:20 am Subject: Re: [Chevelle-list] Exhaust System > Just my two cents but the old axiom "you drive torque and race > horsepower" is true. Unless you actually bet folding money on > street races or a drag strip regular, I'd choose the options that > produce torque. I've got a BBC 402 that's .060 over - that's only > 413 CI. Not to offend anyone out there with a BBC but that is a > smallish motor and does not justify 3" exhaust or 2" headers. All > that stuff seems pretty cool but even the calculations argue > against those sizes. I know that my motor will spin to 6500 but > rare will b0e the day that it does. I routinely shift at 5500 and > once in a blue moon spool it out to 6000. 1 and 3/4 headers and > 2.5 exhaust produce the ideal torque and HP for a .550 lift cam. > Note how many 400+ CI small blocks with 1 and 5/8 headers and 2" > exhaust are written up in HotRod and other mags. This subject has > been studied for years and every time the results are the same. > Once in a while one of the big motor builders will "reveal" that > they put a 1000 CFM Dominator on a SBC with an RV cam and it ran > like a scalded cat. You know as well as I do that somebody is > zommin' somebody. I don't know about you, but every engine builder > I've ever known would BS their mother if it won them more business > or won races. If a motor combination sounds too good to be > true...it probably is. Stick to the calculations and run the > recommendations and you won't regret it. > > Speaking from experience - the only "mistake" I made is to put a > 770 CFM Holley Street Avenger on my motor. It runs perfect but I > am sure that a 670 CFM would have been the better choice. That > motor just can not pump that much air. It's like octane - any more > than is needed to eliminate preignition is wasted - and more carb > volume and exhaust volume than needed to balance the pumping > action of the motor is detrimental to performance. I was just > another one of those guys that didn't want to stand around the car > show and tell people "it's a 600 CFM Holley Wimpalator". But the > fact is, the calculator said, as I recall, my engine should have a > 600 - I just couldn't buy one. > > Just my opinion. > > - Original Message - > From: Larry Shouse > To: The Chevelle Mailing List > Sent: Tuesday, November 29, 2005 8:48 AM > Subject: Re: [Chevelle-list] Exhaust System > > > Thanks to everyone for your input. I spent a few hours going to > all suggested websites, trying to learn what I can. Personal > experience based input is very important to me. > > It looks like we are pretty evenly split between 2.5 and 3 inch > exhaust systems. I've heard (and please correct me if I'm wrong) > that having too much pipe could be detrimental to your torque > numbers, because you need a certain amount of back pressure to > scavenge (pull) the exhaust out... > > I guess the real question then becomes does my 396 with a > Performer RPM Airgap intake and L78 heads redlining at 6500 - 6800 > rpm move enough air to warrant 3 inch pipes. Is there a formula > out there to figure that kind of thing out? Of course I'm willing > to pay for the 3 inch system if it sounds better and has no > detrimental effect on my numbers I found Clint's comments > interesting, using 2" head pipes and reducing down to 2.5" after > the muffler... > > Thanks for putting up with my persistent stream of questions > here. As I dump all available dollars into this project while > dodging my wife's broom, I want to keep my future regrets to a > minimum. > Thanks, > Larry Shouse >- Original Message - >From: Larry Shouse >To: Chevelle List >Sent: Monday, November 28, 2005 4:06 PM >Subject: [Chevelle-list] Exhaust System > > >It's time to buy me an exhaust system. The system will go on a > fairly healthy normally aspirated 396 running L78 heads and > Sanderson intermediate headers with 1 7/8" primaries and 3" > collectors. Those of you in the know, please help me decide > whether I should go with a 2.5" system or a 3" system. Also, brand > suggestions would be great. > >Thanks, >Larry Shouse
Re: [Chevelle-list] Ignition Box Question
Larry, The Boxes look nice on the FW but I keep wanting to move mine under the dash. That is where the coil, timing computer and BTM are located. Just cleaner looking. Walt http://www.personal.kent.edu/~wbainey/CHEVELLE.htm - Original Message - From: Larry Shouse <[EMAIL PROTECTED]> Date: Monday, November 28, 2005 3:59 pm Subject: Re: [Chevelle-list] Ignition Box Question > Thanks Walt. I'm trying to decide if I should build this car with > an > ignition box right from the start. When I go to car shows, I see > plenty of > these muscle cars with MSD or Mallory boxes hanging from the > firewall. They > seem to be reasonably priced. > > Larry > - Original Message - > From: <[EMAIL PROTECTED]> > To: "The Chevelle Mailing List" > Sent: Monday, November 28, 2005 2:53 PM > Subject: Re: [Chevelle-list] Ignition Box Question > > > > Thanks Larry, > > As far as your ign box goes. I don't think there is a HP gain > > tied to it unless you are having issues. But like I said, the car > > started/ran cleaner. Definitely noticed the upgrade from stock > HEI & > > coil to MSD box and coil. Still running both 10-15 years later. > The > > 6AL will get the job done. If you are looking to spend big $$$ the > > digital series is very tunable. > > Walt > > http://www.personal.kent.edu/~wbainey/CHEVELLE.htm > > - Original Message - > > From: Larry Shouse <[EMAIL PROTECTED]> > > Date: Monday, November 28, 2005 2:32 pm > > Subject: Re: [Chevelle-list] Ignition Box Question > > > >> Thanks Walt. > >> > >> Nice looking car you got there... > >> > >> Larry > >> - Original Message - > >> From: <[EMAIL PROTECTED]> > >> To: "The Chevelle Mailing List" > >> Cc: "Chevelle List" > >> Sent: Monday, November 28, 2005 2:11 PM > >> Subject: Re: [Chevelle-list] Ignition Box Question > >> > >> > >> > Larry, > >> > Depends what you are moving from. I had an HEI in my car > >> and > >> > added a 6AL. No HP improvement at the time(12 flat) The > >> biggest > >> > improvement was starting and driving. No loading up and quicker > >> > starts. I was losing a pickup modual in the HEI every year or > >> two. I > >> > started keeping a spare in the glove box. The MSD unit added > >> > dependability. OK, Now that I've jinxed myself. > >> > Walt > >> > http://www.personal.kent.edu/~wbainey/CHEVELLE.htm > >> > > >> > > >> > - Original Message - > >> > From: Larry Shouse <[EMAIL PROTECTED]> > >> > Date: Monday, November 28, 2005 1:50 pm > >> > Subject: [Chevelle-list] Ignition Box Question > >> > > >> >> Besides the automatic timing retard for start-ups and the rev > >> >> limiter, generally speaking, what kind of gains (in HP) can I > >> >> expect out of my 396 by adding one of these multi-spark > >> electronic > >> >> boxes such as MSD and Mallory? > >> >> > >> >> Thanks, > >> >> Larry > >> > > >> > >> > > > > >
Re: [Chevelle-list] Exhaust System
Hey Larry, Both 2.5 and 3" will get the job done. I would look at quality, fit, and muffler sound that you like. I ran 11's with a 2.5" exhaust and summit cheapy turbo mufflers and ran 10's with 4" flowmaster loud pipes! The current Borla system fits in all the factory mounting locations and is made of SS. I picked it up off the Summit clearance counter for under $300. I like the flowmaster sound a little better than the borla but price, fit, and quality won out. Here are a few pics of the system http://www.personal.kent.edu/~wbainey/BORLA.htm Walt http://www.personal.kent.edu/~wbainey/CHEVELLE.htm - Original Message - From: Larry Shouse <[EMAIL PROTECTED]> Date: Monday, November 28, 2005 4:06 pm Subject: [Chevelle-list] Exhaust System > It's time to buy me an exhaust system. The system will go on a > fairly healthy normally aspirated 396 running L78 heads and > Sanderson intermediate headers with 1 7/8" primaries and 3" > collectors. Those of you in the know, please help me decide > whether I should go with a 2.5" system or a 3" system. Also, brand > suggestions would be great. > > Thanks, > Larry Shouse
Re: [Chevelle-list] 3.73 or 4.56?
3.73 will be the better all around gear..especially if you ever hit the highway. I've had 4.10's then 4.33's while primarily racing. Now I have 3.73's and stuff the tallest MT DR I could find in there. 29+" tall to cut down the gear even more for highway speeds. 3.73's or 3.55 might not produce the best possible track times but the driveability is worth the trade off. Walt http://www.personal.kent.edu/~wbainey/CHEVELLE.htm - Original Message - From: "J. Brady" <[EMAIL PROTECTED]> Date: Monday, November 28, 2005 4:24 pm Subject: [Chevelle-list] 3.73 or 4.56? > OK folks, > > I have the opportunity to use 3.73 or 4.56 gears in > the 10-bolt posi I'm going to put in the '66. The car > has a 300+/-HP 327 and PG. Anyone have any thoughts > or previous experience with the 4.56 gears and the > PG/small block setup? > > I drive the car to local shows, and want to be able to > take it to Cecil on occasion. A relative told me to > do the 4.56s and nothing less, thus my indecision. > > Thanks, > > Jim > > > > > > __ > Yahoo! Mail - PC Magazine Editors' Choice 2005 > http://mail.yahoo.com > >
Re: [Chevelle-list] 3.73 or 4.56?
Jim,I have a very healthy 350 cu.in over 400 hp in my 71 convt...had 3:21 stock gears...after the engine was done I wanted to drag it a few times a yr with my car club...so I went to 3:73...not a huge improvement in et but I like to drive the car and with the 3:73's the engine revs way to much at highway speeds and it is driving me crazy...I am repainting the car this winter and after the paint is done,I am either going back to the stock 3:21 or maybe 3:50.So I say if ya are wanting to drive the car any distance stich with the 3:73 or 3:50..if ya plan on doing a lot of racing then 4:56 or 4:11 Ron - Original Message - From: [EMAIL PROTECTED] To: Chevelle-list@chevelles.net Sent: Tuesday, November 29, 2005 9:20 AM Subject: Re: [Chevelle-list] 3.73 or 4.56? Hi Jim: I've heard what everyone said & I agree with most. I've got a pretty healthy 327 in a 65 SS with a M-20 4 speed, a 12 bolt & 3.73 gears. I'm running Coker 75 series redline tires about 28 inches high. It's great in town, the suburbs & back roads. On the highway at 60-65 I'm taching 3000-3200 rpms & people are blowing me off the road. I try to drive non-highway as much as possible. I also drag race it a few time a season. The future may include a 5 or 6 speed. It's mainly a show car & a cruiser. The max its been on the road is 100 miles one way. The Flowmasters are singing all the way!! It's noisy! If you plan little or no highway use & will be driving mostly in town & around, with an occasional trip to the drags, you could get away with the 4.56. If you plan to cruise & put it on the road stay away. Go with the 3.55-3.73. The 3.73 is about the most versitile and that's stretching it. Use the ratio that will best fit what your plans are for the car. Be realistic. With a 4.56 you may have to trailer to some events as necessary. I enjoy driving my car & am not interested in burning out my engine prematurely. Those 5 & 6 speeds with the .8 & .6 gears are looking better every year!! Good luck with your decision & Happy Cruising!!! Phil G. 65 SS -Original Message-From: J. Brady <[EMAIL PROTECTED]>To: Chevelle Group Sent: Mon, 28 Nov 2005 13:24:17 -0800 (PST)Subject: [Chevelle-list] 3.73 or 4.56? OK folks, I have the opportunity to use 3.73 or 4.56 gears in the 10-bolt posi I'm going to put in the '66. The car has a 300+/-HP 327 and PG. Anyone have any thoughts or previous experience with the 4.56 gears and the PG/small block setup? I drive the car to local shows, and want to be able to take it to Cecil on occasion. A relative told me to do the 4.56s and nothing less, thus my indecision. Thanks, Jim __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com
Re: [Chevelle-list] Exhaust System
Just my two cents but the old axiom "you drive torque and race horsepower" is true. Unless you actually bet folding money on street races or a drag strip regular, I'd choose the options that produce torque. I've got a BBC 402 that's .060 over - that's only 413 CI. Not to offend anyone out there with a BBC but that is a smallish motor and does not justify 3" exhaust or 2" headers. All that stuff seems pretty cool but even the calculations argue against those sizes. I know that my motor will spin to 6500 but rare will be the day that it does. I routinely shift at 5500 and once in a blue moon spool it out to 6000. 1 and 3/4 headers and 2.5 exhaust produce the ideal torque and HP for a .550 lift cam. Note how many 400+ CI small blocks with 1 and 5/8 headers and 2" exhaust are written up in HotRod and other mags. This subject has been studied for years and every time the results are the same. Once in a while one of the big motor builders will "reveal" that they put a 1000 CFM Dominator on a SBC with an RV cam and it ran like a scalded cat. You know as well as I do that somebody is zommin' somebody. I don't know about you, but every engine builder I've ever known would BS their mother if it won them more business or won races. If a motor combination sounds too good to be true...it probably is. Stick to the calculations and run the recommendations and you won't regret it. Speaking from experience - the only "mistake" I made is to put a 770 CFM Holley Street Avenger on my motor. It runs perfect but I am sure that a 670 CFM would have been the better choice. That motor just can not pump that much air. It's like octane - any more than is needed to eliminate preignition is wasted - and more carb volume and exhaust volume than needed to balance the pumping action of the motor is detrimental to performance. I was just another one of those guys that didn't want to stand around the car show and tell people "it's a 600 CFM Holley Wimpalator". But the fact is, the calculator said, as I recall, my engine should have a 600 - I just couldn't buy one. Just my opinion. - Original Message - From: Larry Shouse To: The Chevelle Mailing List Sent: Tuesday, November 29, 2005 8:48 AM Subject: Re: [Chevelle-list] Exhaust System Thanks to everyone for your input. I spent a few hours going to all suggested websites, trying to learn what I can. Personal experience based input is very important to me. It looks like we are pretty evenly split between 2.5 and 3 inch exhaust systems. I've heard (and please correct me if I'm wrong) that having too much pipe could be detrimental to your torque numbers, because you need a certain amount of back pressure to scavenge (pull) the exhaust out... I guess the real question then becomes does my 396 with a Performer RPM Airgap intake and L78 heads redlining at 6500 - 6800 rpm move enough air to warrant 3 inch pipes. Is there a formula out there to figure that kind of thing out? Of course I'm willing to pay for the 3 inch system if it sounds better and has no detrimental effect on my numbers I found Clint's comments interesting, using 2" head pipes and reducing down to 2.5" after the muffler... Thanks for putting up with my persistent stream of questions here. As I dump all available dollars into this project while dodging my wife's broom, I want to keep my future regrets to a minimum. Thanks, Larry Shouse - Original Message - From: Larry Shouse To: Chevelle List Sent: Monday, November 28, 2005 4:06 PM Subject: [Chevelle-list] Exhaust System It's time to buy me an exhaust system. The system will go on a fairly healthy normally aspirated 396 running L78 heads and Sanderson intermediate headers with 1 7/8" primaries and 3" collectors. Those of you in the know, please help me decide whether I should go with a 2.5" system or a 3" system. Also, brand suggestions would be great. Thanks, Larry Shouse
Re: [Chevelle-list] 3.73 or 4.56?
Hi Jim: I've heard what everyone said & I agree with most. I've got a pretty healthy 327 in a 65 SS with a M-20 4 speed, a 12 bolt & 3.73 gears. I'm running Coker 75 series redline tires about 28 inches high. It's great in town, the suburbs & back roads. On the highway at 60-65 I'm taching 3000-3200 rpms & people are blowing me off the road. I try to drive non-highway as much as possible. I also drag race it a few time a season. The future may include a 5 or 6 speed. It's mainly a show car & a cruiser. The max its been on the road is 100 miles one way. The Flowmasters are singing all the way!! It's noisy! If you plan little or no highway use & will be driving mostly in town & around, with an occasional trip to the drags, you could get away with the 4.56. If you plan to cruise & put it on the road stay away. Go with the 3.55-3.73. The 3.73 is about the most versitile and that's stretching it. Use the ratio that will best fit what your plans are for the car. Be realistic. With a 4.56 you may have to trailer to some events as necessary. I enjoy driving my car & am not interested in burning out my engine prematurely. Those 5 & 6 speeds with the .8 & .6 gears are looking better every year!! Good luck with your decision & Happy Cruising!!! Phil G. 65 SS -Original Message-From: J. Brady <[EMAIL PROTECTED]>To: Chevelle Group Sent: Mon, 28 Nov 2005 13:24:17 -0800 (PST)Subject: [Chevelle-list] 3.73 or 4.56? OK folks, I have the opportunity to use 3.73 or 4.56 gears in the 10-bolt posi I'm going to put in the '66. The car has a 300+/-HP 327 and PG. Anyone have any thoughts or previous experience with the 4.56 gears and the PG/small block setup? I drive the car to local shows, and want to be able to take it to Cecil on occasion. A relative told me to do the 4.56s and nothing less, thus my indecision. Thanks, Jim __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com
Re: [Chevelle-list] Exhaust System
Sorry, I misquoted Clint. I meant to say 3" head pipe and 2.5" after the mufflers... Larry Shouse - Original Message - From: Larry Shouse To: The Chevelle Mailing List Sent: Tuesday, November 29, 2005 8:48 AM Subject: Re: [Chevelle-list] Exhaust System Thanks to everyone for your input. I spent a few hours going to all suggested websites, trying to learn what I can. Personal experience based input is very important to me. It looks like we are pretty evenly split between 2.5 and 3 inch exhaust systems. I've heard (and please correct me if I'm wrong) that having too much pipe could be detrimental to your torque numbers, because you need a certain amount of back pressure to scavenge (pull) the exhaust out... I guess the real question then becomes does my 396 with a Performer RPM Airgap intake and L78 heads redlining at 6500 - 6800 rpm move enough air to warrant 3 inch pipes. Is there a formula out there to figure that kind of thing out? Of course I'm willing to pay for the 3 inch system if it sounds better and has no detrimental effect on my numbers I found Clint's comments interesting, using 2" head pipes and reducing down to 2.5" after the muffler... Thanks for putting up with my persistent stream of questions here. As I dump all available dollars into this project while dodging my wife's broom, I want to keep my future regrets to a minimum. Thanks, Larry Shouse - Original Message - From: Larry Shouse To: Chevelle List Sent: Monday, November 28, 2005 4:06 PM Subject: [Chevelle-list] Exhaust System It's time to buy me an exhaust system. The system will go on a fairly healthy normally aspirated 396 running L78 heads and Sanderson intermediate headers with 1 7/8" primaries and 3" collectors. Those of you in the know, please help me decide whether I should go with a 2.5" system or a 3" system. Also, brand suggestions would be great. Thanks, Larry Shouse
Re: [Chevelle-list] Exhaust System
Thanks to everyone for your input. I spent a few hours going to all suggested websites, trying to learn what I can. Personal experience based input is very important to me. It looks like we are pretty evenly split between 2.5 and 3 inch exhaust systems. I've heard (and please correct me if I'm wrong) that having too much pipe could be detrimental to your torque numbers, because you need a certain amount of back pressure to scavenge (pull) the exhaust out... I guess the real question then becomes does my 396 with a Performer RPM Airgap intake and L78 heads redlining at 6500 - 6800 rpm move enough air to warrant 3 inch pipes. Is there a formula out there to figure that kind of thing out? Of course I'm willing to pay for the 3 inch system if it sounds better and has no detrimental effect on my numbers I found Clint's comments interesting, using 2" head pipes and reducing down to 2.5" after the muffler... Thanks for putting up with my persistent stream of questions here. As I dump all available dollars into this project while dodging my wife's broom, I want to keep my future regrets to a minimum. Thanks, Larry Shouse - Original Message - From: Larry Shouse To: Chevelle List Sent: Monday, November 28, 2005 4:06 PM Subject: [Chevelle-list] Exhaust System It's time to buy me an exhaust system. The system will go on a fairly healthy normally aspirated 396 running L78 heads and Sanderson intermediate headers with 1 7/8" primaries and 3" collectors. Those of you in the know, please help me decide whether I should go with a 2.5" system or a 3" system. Also, brand suggestions would be great. Thanks, Larry Shouse
RE: [Chevelle-list] Exhaust System
Hi Larry, On my chevelle with a SBC and headers I had the flowmaster setup, this due to a suggestion I received on this list a while ago. I was very happy with it but this time around I'll go with a 3"stainless setup with four borla mufflers due to my dream of allot of horsepower in my next engine. I dont know about the size but I would spend the extra cash on stainless steel right away André > Hi Larry, > > IMO, you should go with a 3" exhaust with an X crossover along with the > mufflers of your choice. I like Spin Tech, they're a bit loud at full song > but have a unique sound that you won't hear as often as the bellybutton > Flowmasters. Dynomax Ultraflows are nice too if you want something a little > more subtle (I used to have them on my Vette but wanted it louder for some > reason). I'm actually interested in hearing the new mufflers from > Edelbrock. The cutaway looks like a cross between Spin Tech and Flowmaster. > > Another place you might look is a company called Pypes, > http://www.pypesexhaust.com/ they even have some sound clips online. > Herb Lumpp > http://users.adelphia.net/~hlump/index.htm > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Larry Shouse > Sent: Monday, November 28, 2005 4:07 PM > To: Chevelle List > Subject: [Chevelle-list] Exhaust System > > > It's time to buy me an exhaust system. The system will go on a fairly > healthy normally aspirated 396 running L78 heads and Sanderson intermediate > headers with 1 7/8" primaries and 3" collectors. Those of you in the know, > please help me decide whether I should go with a 2.5" system or a 3" system. > Also, brand suggestions would be great. > > Thanks, > Larry Shouse >
Re: [Chevelle-list] 3.73 or 4.56?
I'd go with the 3,73 unless you plan to only dragrace André > OK folks, > > I have the opportunity to use 3.73 or 4.56 gears in > the 10-bolt posi I'm going to put in the '66. The car > has a 300+/-HP 327 and PG. Anyone have any thoughts > or previous experience with the 4.56 gears and the > PG/small block setup? > > I drive the car to local shows, and want to be able to > take it to Cecil on occasion. A relative told me to > do the 4.56s and nothing less, thus my indecision. > > Thanks, > > Jim > > > > > > __ > Yahoo! Mail - PC Magazine Editors' Choice 2005 > http://mail.yahoo.com > >
Re: [Chevelle-list] 3.73 or 4.56?
I'd go with the 3,73 unless you plan to only dragrace André > OK folks, > > I have the opportunity to use 3.73 or 4.56 gears in > the 10-bolt posi I'm going to put in the '66. The car > has a 300+/-HP 327 and PG. Anyone have any thoughts > or previous experience with the 4.56 gears and the > PG/small block setup? > > I drive the car to local shows, and want to be able to > take it to Cecil on occasion. A relative told me to > do the 4.56s and nothing less, thus my indecision. > > Thanks, > > Jim > > > > > > __ > Yahoo! Mail - PC Magazine Editors' Choice 2005 > http://mail.yahoo.com > >
RE: [Chevelle-list] AGR
I guess I will. $400+ dollars...I should make a real good guinea pig!(GRIN) Although I have heard no complaints about Flaming River. Dan -Original Message- From: Clint Hooper [mailto:[EMAIL PROTECTED] Sent: Monday, November 28, 2005 7:45 PM To: The Chevelle Mailing List Subject: Re: [Chevelle-list] AGR The only used part is the case,Dan,and those rarely wear out. You'll make a good guinea pig for Flaming River,though. Clint Hooper H&H Custom,owner 1969 El Camino ProTourer 2001 H-D FLHR custom bagger http://dalesplace.com/misc/friends/clint/clint_hooper.htm - Original Message - From: "Dan Mascheck" <[EMAIL PROTECTED]> > Clint, > AGR steering boxes are rebuilt, while not bad, they are used boxes, hence > the difference in price compared to Flaming River. I bought the steering > column from Flaming River, so I sprung for the 12:1 from them. Another $100, > but it is new. > Dan Mascheck
Re: [Chevelle-list] Parts
i know nothing of rear ends except how to replace them so i have always relied on moser enginering to awnser any of my questions the almost have a ad in any hot rod book they have convinced me that they know what they are doin
