Stock dyno ZL1

[JUISSD]

Originally Posted by the rich dude

510 RWHP at a 18% drivetrain loss witch is very conservative in a automatic works out to 602 flywheel horse power. Very respectable

It would actually be 622hp. You divide by .82 not multiply by 1.18.

[Black GT]

Originally Posted by JUISSD

It would actually be 622hp. You divide by .82 not multiply by 1.18.

Just add 18% to 510, you come up with 602 (601.8 to be exact)

[Bob Cosby]

As others have stated numerous times, a dyno number is a great tuning tool, and is often used for bragging rights. Howevr, there is no set "percentage" that you can use to calculate BHP from RWHP. 15% might have worked for a car that made xxx HP using a yyyy driveline, and 20% might have worked for another, but it doesn't work across the board and should not be used as a measurement for what the car is making at the crank - within 1-2% of the SAE rating (kudos to GM for going to this standard) is probably your best bet.

[tooslow]

Originally Posted by Drake Heminger

I see it possible the Chevy underrating the hp... if its doing that to the wheels it has to be more to the crank... of course I will always say 580 but if there is more that is very impressive... good news to see!

How many times does it have to be said? The LSA is the ZL1 is SAE certified at 580HP. GM did not underrate it and all you're likely to see "broken in" is maybe 5-8HP more. All you are seeing with these varied dyno numbers is the known fact that no two dynos read the same.

To the OP, congrats on the purchase, I know you must be happy cruising around in that car!

[L99CAMA2011]

Originally Posted by Bob Cosby

As others have stated numerous times, a dyno number is a great tuning tool, and is often used for bragging rights. Howevr, there is no set "percentage" that you can use to calculate BHP from RWHP. 15% might have worked for a car that made xxx HP using a yyyy driveline, and 20% might have worked for another, but it doesn't work across the board and should not be used as a measurement for what the car is making at the crank - within 1-2% of the SAE rating (kudos to GM for going to this standard) is probably your best bet.

True and doesn't the ZL-1 have a smaller overall diameter tire than the stock SS.

[KD Innovations]

I liked seeing 120 mph and an 11:43 out of a stock ZL1 with rubber. That will get you kicked out of a lot of NHRA sanctioned tracks.

[mlee]

Originally Posted by KD Innovations

I liked seeing 120 mph and an 11:43 out of a stock ZL1 with rubber. That will get you kicked out of a lot of NHRA sanctioned tracks.

All of them if they are playing by the rules...

[KD Innovations]

It is going in for a long list of mods in a week. Expect 9's.

[capnkirk52]

That car was making 10.15 lb of boost? I thought stock was 8?

[kona]

Originally Posted by Black GT

Just add 18% to 510, you come up with 602 (601.8 to be exact)

Math Major in your former life??

[EvilZL1]

Where in Tn can one receive a Dyno

[Bad@ssCamaro]

Originally Posted by Black GT

Just add 18% to 510, you come up with 602 (601.8 to be exact)

You are incorrect in your assesment. If the SAE is 580 and when Dyno'd at 510, you get a 70 hp drivetrain loss which = 12%. 580 x .12 = 70HP. You can't start with the rwhp and use one constant figure to multiply with (you should be dividing anyway) since each dyno number is subjected to change based on conditions. For example with the 510 rwhp -> .510/.88(1-.12)= 580 bhp

[collins motorsport]

Originally Posted by Blueclyde

Do all dealers put 87 Octane in? I need to place a call to my dealer tomorrow. I'm picking up my car next week and would rather get it empty.

They put a dealer tag on mine and let me drive it down the road to a station and they filled it up with premium

[Blueclyde]

Originally Posted by collins motorsport

They put a dealer tag on mine and let me drive it down the road to a station and they filled it up with premium

I was at my dealer today signing the papers for the car. It will be delviered later this week. They assured me they will fill it with 93 octane.