Another Z06 Dyno Sheet

[FRC Tom]

Picked up at the dealer, driven 525 miles, cool down 45 min, and on the dyno. Wideband blew out of the exhaust.

[Torched]

Thanks for your results great numbers very strong. I agree in what you did: Dyno after the initial 500 mile brake in period not before. Greg

[Vetteluvr]

Another verification that horsepower rating is conservative! Thanks for the post!

[FRC Tom]

It was also 85+ degrees and 90+ humidity.

[SIINSI]

Are you able to find out exactly what that translates to be at the crank? Great #'s!

Miguel

[Torched]

Originally Posted by FRC Tom

It was also 85+ degrees and 90+ humidity.

Tom,
With your dyno results could you please give a estimate what that HP translates to flywheel HP. What i'm getting at: Do you feel the 505 GM HP rating is under rated and by approx how much in your opinion. Greg

[IT L GO]

You got to love GM for giving under stated HP ratings compared to Fords over rated HP ratings.

[No Doubt]

The C6 Z06 is of course rated at 505 BHP.

Take your pick:

515 RWHP with 13% drivetrain loss = 592 BHP

515 RWHP with 7% drivetrain loss = 554 BHP

515 RWHP with 3% drivetrain loss = 531 BHP

515 RWHP with 1% drivetrain loss = 521 BHP

[No Doubt]

21st Century Muscle Cars claims a 17% or more drivetrain loss for the C5/Z06 with M12 transmission. If that is true for the C6/Z06 as well it would put the C6 Z06 at 621 BHP and we know that is not true. Either the C5/Z06 drivetrain with its M12 transmission is vastly less efficient than the C6 Z06 drivetrain, also with a manual transmission, or 21st Century Muscle Cars is wrong.

Here is what they said:

"We have compared claimed Brake Horsepower #s from car manufacturers against the rear wheel #s on our dyno and almost always have found the quoted horsepower # vs. rear wheel Horsepower # to be between 14-22% depending on the transmission and the final drive gears."

[IT L GO]

Lingenfelter uses 15% for C5 manuals and 17% for C4 manuals

[No Doubt]

Disregard what I posted above. For some reason the forum is not letting me edit my posts. I must be dyslexic this AM because it's 455 RWHP, NOT 515!

Yes, they claim 14-22% per above.

[No Doubt]

A cup of coffee later

455 RWHP with a 17% drivetrain loss = 549 BHP

455 RWHP with a 15% drivetrain loss = 536 BHP

455 RWHP with a 14% drivetrain loss = 530 BHP

Much better.

(Now I look like a complete idiot)

[Ianz06]

Nodoubt,
I thought someone had stolen your userid
We all have our senior moments, glad your back to your normal knowlegeable self

[Fore58]

No Doubt, you're just excited. There's nothing wrong with that, normal. You just went forward on the numbers.

[Zlicious]

WOW Tom. Remind me of 2 things:

1) Get a black car
2) Contact you for break in procedures..

Awesome Tom, enjoy that beast and be safe!!