Dyno hp
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
The A6 drivetrain will lose about 15% HP due to parasitic loss.
436 Net HP . . -15% = 371 RWHP
(That's using the new SAE J1349 correction factors for 'standard' atmospheric conditions)
Baro Press: . . 29.23 in/hg
Air Temp: . - . 77° F
Humidity: . . . 0%
__________________________
Keep in mind that various dynos very in the numbers they will show (the world of dynos is certainly not a perfect world)
436 Net HP . . -15% = 371 RWHP
(That's using the new SAE J1349 correction factors for 'standard' atmospheric conditions)
Baro Press: . . 29.23 in/hg
Air Temp: . - . 77° F
Humidity: . . . 0%
__________________________
Keep in mind that various dynos very in the numbers they will show (the world of dynos is certainly not a perfect world)
Thread Starter
Advanced
Joined: Jan 2019
Posts: 56
Likes: 10
That is so helpful! I just had a tune and AFE CAI installed and ended up with 392 at the wheels. BUT they didn't give me dyno sheet of the baseline pull so I don't know how much gain we had. If 392 at rear wheels, what HP would you guess at the crank?
I see you are an '87 Camaro owner; I had a '87 IROC and '02 Berger Camaro. BOTH sold. The IROCs are going for insane prices right now.
Thanks!
I see you are an '87 Camaro owner; I had a '87 IROC and '02 Berger Camaro. BOTH sold. The IROCs are going for insane prices right now.
Thanks!
Le Mans Master
Joined: May 2005
Posts: 7,912
Likes: 2,058
From: Cypress TX
Actually seeing the numbers is a little bit disheartening because I sold my ZR1 with 683rwhp (on E85) last year, and now I'm running around in a bone stock 2011 Grand Sport M6. I reflect back to my 2008 Z06 and my quest to get over 500rwhp on that LS7 running NA. It took ~$30K and an all-forged custom built engine to get there (G&G Performance Engines in Tomball, TX - ended up with over 600rwhp). And that's only ~$8K less than I paid for this whole Grand Sport. 
Ah, the quest for power. I think if I get the bug again (not likely, but stranger things have happened), I'll just throw on an A&A supercharger and call it a day.
Ah, the quest for power. I think if I get the bug again (not likely, but stranger things have happened), I'll just throw on an A&A supercharger and call it a day.
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Burning Brakes
Joined: Jan 2019
Posts: 1,209
Likes: 215
From: Dallas, Tx
Actually seeing the numbers is a little bit disheartening because I sold my ZR1 with 683rwhp (on E85) last year, and now I'm running around in a bone stock 2011 Grand Sport M6. I reflect back to my 2008 Z06 and my quest to get over 500rwhp on that LS7 running NA. It took ~$30K and an all-forged custom built engine to get there (G&G Performance Engines in Tomball, TX - ended up with over 600rwhp). And that's only ~$8K less than I paid for this whole Grand Sport.
Ah, the quest for power. I think if I get the bug again (not likely, but stranger things have happened), I'll just throw on an A&A supercharger and call it a day.
Ah, the quest for power. I think if I get the bug again (not likely, but stranger things have happened), I'll just throw on an A&A supercharger and call it a day.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
A bone stock LS3 (A6) makes about 371 RWHP ... It would take an additional 129 RWHP to get it up to 500 RWHP.
There is no way in hell that a "big aggressive" cam alone is good for 129 RWHP on an otherwise stock LS3.
There is no way in hell that a "big aggressive" cam alone is good for 129 RWHP on an otherwise stock LS3.
Burning Brakes
Joined: Jan 2019
Posts: 1,209
Likes: 215
From: Dallas, Tx
Le Mans Master
Joined: May 2005
Posts: 7,912
Likes: 2,058
From: Cypress TX
And that $30K worth came in the form of having to do a complete tear down and rebuild of the short block because the lifters with dual-springs (changed to PSI Beehive in the rebuild) were too aggressive where it seized the roller on one of the lifters and ate a lobe off the cam. Metal shavings everywhere.
I probably had $40K into that car before I finally cut my losses and got rid of it. Here was the final build: https://www.corvetteforum.com/forums...ack-ebony.html
Drifting
Joined: Oct 2013
Posts: 1,495
Likes: 154
From: Somewhere Near Bakersfield California
08 ls3.
it shows baseline run and final run with tune.
the car was not stock when I brought it for a tune.
longtube headers offroad midpipe and mufflerless axleback. Vararam ram intake.
FInal numbers are with the dyno tune.
SAE corrected. I even double SAE corrected it myself and got about the same numbers. I have a video of the computer doing the run and got all info from the monitor that's needed to calculate.
Church's Automotive Los Angeles
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
460 Net Crank HP x .15 = 69
460 Net Crank HP - 69 = 391 RWHP
__________________________
This is considering a 15% loss of HP through the drivetrain
Bottom line ... If you decrease 460 by 15%, you get 391
460 Net Crank HP - 69 = 391 RWHP
__________________________
This is considering a 15% loss of HP through the drivetrain
Bottom line ... If you decrease 460 by 15%, you get 391
Racer
Joined: Oct 2021
Posts: 389
Likes: 76
From: Chicago
Le Mans Master
Joined: May 2005
Posts: 7,912
Likes: 2,058
From: Cypress TX
For me, since they're all Corvettes and represent the 17+ years that I've been here on the forum, it imparts a certain credibility when I discuss any particular model based on personal experience. I still have two of the six in the garage.
Safety Car
Joined: Sep 2007
Posts: 4,001
Likes: 487
From: South Florida
I have seen stock A6 corvettes dyno anywhere from 360wheel to 400wheel. A more normal number would be in the 360-80 range. Manual cars I've seen anywhere from 360wheel to 400wheel. My car has just headers and tune, manual grand sport and dynoed 432, car probably made right around 400 wheel stock.
Burning Brakes
Joined: Feb 2021
Posts: 771
Likes: 399
2022 C6 of the Year Finalist - Unmodified