Re: [Chevelle-List] My engine!
Title: Message Thanks Brad! Those are better numbers than I thought. I was figuring about 340 hp & 370 torque. I'll keep the cam change in mind! :-) I really appreciate your help! Don -- This is only an educated guess based on the program and the inputs you gave. I could not find a stock cam like yours, so I used a Comp XE268 as the baseline and dropped the lift a fraction and opened up the separation from 110 to 112, neither of which made a big difference. You should have a really wide power band with a terrific torque curve, with over 90% of peak torque from 2000 to 5000 RPM. RPM HP TQ 2000 143 376 2500 184 387 3000 226 395 3500 269 403 4000 307 403 4500 339 396 5000 355 373 5500 352 336 6000 330 289 If you really want to wake that bad boy up, an XR270 (roller cam) bumps up peak torque to 443 @ 4000 RPM (still has 407 @ 2000 RPM) and peak power to 402 @ 5500 RPM. 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:[EMAIL PROTECTED] On Behalf Of DonSent: Monday, July 14, 2003 9:40 PMTo: [EMAIL PROTECTED]Subject: Re: [Chevelle-List] My engine! I was wondering if anyone could punch in the numbers off of the smallblock I'm building & give me an estimate of HP & Torque? It's a 350 4 bolt main, bored .030 with 10:1 compression. The cam is a Comp Cams Hydraulic... duration: 229Intake / 236Exhaust @ .050 liftGross Lift: 468Intake / 462ExhaustLobe separation: 112 degreesHeads are S/R Torquers w/ 2.02 / 1.60 valves, 67cc chambers & 170cc intake runnersEdelbrock Peformer RPM Intake & 600 carbMallory HEI DistributorDynomax Ceramic coated "shorty" headersPlus ARP rod bolts, Fluidampr Street Dampner, FelPro, etc,etc...Pistons are Keith Black I'd sure appreciate any help or advice. It's going in a 72 Chevelle with a 350 auto. I want it to be a stout, dependable street engine. It won't be raced. What do ya think? DonTSC-005ACES # 05091
RE: [Chevelle-List] My engine!
Title: Message This is only an educated guess based on the program and the inputs you gave. I could not find a stock cam like yours, so I used a Comp XE268 as the baseline and dropped the lift a fraction and opened up the separation from 110 to 112, neither of which made a big difference. You should have a really wide power band with a terrific torque curve, with over 90% of peak torque from 2000 to 5000 RPM. RPM HP TQ 2000 143 376 2500 184 387 3000 226 395 3500 269 403 4000 307 403 4500 339 396 5000 355 373 5500 352 336 6000 330 289 If you really want to wake that bad boy up, an XR270 (roller cam) bumps up peak torque to 443 @ 4000 RPM (still has 407 @ 2000 RPM) and peak power to 402 @ 5500 RPM. 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:[EMAIL PROTECTED] On Behalf Of DonSent: Monday, July 14, 2003 9:40 PMTo: [EMAIL PROTECTED]Subject: Re: [Chevelle-List] My engine! I was wondering if anyone could punch in the numbers off of the smallblock I'm building & give me an estimate of HP & Torque? It's a 350 4 bolt main, bored .030 with 10:1 compression. The cam is a Comp Cams Hydraulic... duration: 229Intake / 236Exhaust @ .050 liftGross Lift: 468Intake / 462ExhaustLobe separation: 112 degreesHeads are S/R Torquers w/ 2.02 / 1.60 valves, 67cc chambers & 170cc intake runnersEdelbrock Peformer RPM Intake & 600 carbMallory HEI DistributorDynomax Ceramic coated "shorty" headersPlus ARP rod bolts, Fluidampr Street Dampner, FelPro, etc,etc...Pistons are Keith Black I'd sure appreciate any help or advice. It's going in a 72 Chevelle with a 350 auto. I want it to be a stout, dependable street engine. It won't be raced. What do ya think? DonTSC-005ACES # 05091
Re: [Chevelle-List] My engine!
Title: Message I was wondering if anyone could punch in the numbers off of the smallblock I'm building & give me an estimate of HP & Torque? It's a 350 4 bolt main, bored .030 with 10:1 compression. The cam is a Comp Cams Hydraulic... duration: 229Intake / 236Exhaust @ .050 liftGross Lift: 468Intake / 462ExhaustLobe separation: 112 degreesHeads are S/R Torquers w/ 2.02 / 1.60 valves, 67cc chambers & 170cc intake runnersEdelbrock Peformer RPM Intake & 600 carbMallory HEI DistributorDynomax Ceramic coated "shorty" headersPlus ARP rod bolts, Fluidampr Street Dampner, FelPro, etc,etc...Pistons are Keith Black I'd sure appreciate any help or advice. It's going in a 72 Chevelle with a 350 auto. I want it to be a stout, dependable street engine. It won't be raced. What do ya think? DonTSC-005ACES # 05091
RE: [Chevelle-List] My engine!
Title: Message Without more info, I can only guess. I have Dyno2000, so if you do get full specs, or have a cam you want to compare, I can help out. I used the GM 049 head (253cc port) flow file, and made a bunch of assumptions about the specs. Your 0.030 over 402 is 408.1 cubic inches, I used 9:1 compression as a guess, 800 CFM carburetor, Dual Plane intake, Small Tube headers with mufflers, and a "high performance street" hydraulic cam. The program used a pretty basic cam with 278 duration and .478 lift on a 108 lobe center. This all got you and estimated 375 HP @ 5000 RPM and 430 TQ at 4000 RPM. Before you think this is bad, check out the full curve: RPM HP TQ 2000 155 407 2500 197 414 3000 240 419 3500 285 427 4000 328 430 4500 359 419 5000 375 394 5500 368 351 6000 343 300 If you want to wake it up, add a roller cam. Want to really go crazy, a roller cam and a great aftermarket head. Adding a roller with this setup pumped up the curves by about 30 Lb-Ft across the board, with 438 at 2000 RPM and 471 at 4000. This brings HP to 419 at 5000 rpm. Roller cams mean retrofitting the lifters and extra costs. 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:[EMAIL PROTECTED] On Behalf Of Pelle AnderssonSent: Sunday, July 13, 2003 1:17 PMTo: [EMAIL PROTECTED]Subject: [Chevelle-List] My engine! What kind of BHP can I whip out of this setup? What needs to be done? I know I've asked you before but I wasn't sure about the # back then !! block: 3969854402...70-72...4 bolt, bored 0,30 head:399382071..oval...OPEN...402, 113cc chamber, 255/114 ports Intake manifold: Edelbrock performance RPM Holley 800 cfm DP carburetor Hooker Headers (2,5’’) 2,5’’ Hooker stainless exhaust sys. Still not sure about the cam, but I'm told it's a hi performance cam due to the sound it makes running on idle (does that make sense?) I don't have a clue so I'm wondering, how many bhp (approx) do I have & how much can I get without a complete engine rebuild? Best regards Pelle Andersson
[Chevelle-List] My engine!
What kind of BHP can I whip out of this setup? What needs to be done? I know I've asked you before but I wasn't sure about the # back then !! block: 3969854402...70-72...4 bolt, bored 0,30 head:399382071..oval...OPEN...402, 113cc chamber, 255/114 ports Intake manifold: Edelbrock performance RPM Holley 800 cfm DP carburetor Hooker Headers (2,5) 2,5 Hooker stainless exhaust sys. Still not sure about the cam, but I'm told it's a hi performance cam due to the sound it makes running on idle (does that make sense?) I don't have a clue so I'm wondering, how many bhp (approx) do I have & how much can I get without a complete engine rebuild? Best regards Pelle Andersson
