Flywheel vs. RWHP

[georgethedog]

On average, what would you say the loss is on any (or all) of the Viper generations? For example, a Gen 1 was advertised as 400hp, but what would it have been at the rear wheels? Same question for the Gen 2-4? Curious... Thanks.

 

[SquadX]

believe the standard for vipers is 12-15%. Mods like an light weight wheel wheel will lower that number. I read an article where an 04 z06 changed out the clutch and flywheel for lighter weights versions and from 0-150 was 2 seconds quicker then stock.

 

[Detlef]

My previous stock GTS dynoed at 396 rwhp. So from 450 to 396 is a 13.64% loss, if my math is correct. My current GTS dynoed at 447 rwhp, so in theory it is 508HP at the flywheel.

 

[sekhmet]

Its hard to say because discrepancies between different models of dynos can more than make up for a wide range of drivetrain losses.

For example. My 99 ACR made 437 RWH(dynojet) with a catback which equals 489 Flywheel HP @ 12% loss. Probably a pretty accurate estimation.



Generally people say for Front engine, RWD, manual tranny cars 12-15%.

 

[mjorgensen Woodhouse]

I have been told by the folks at Arrow that the factor they use is 1.097! I know most believe it is 12-15% though.

 

[01sapphirebob]

I have been told the same thing. That 12-15% is the drop off.