I have 400 rwhp how much flywheel hp is that ? anyone help me out? 380 rwtq?

 

It would help a lot if we knew more about your car. Is it an A4 or M6? Modified drivetrain? Stall?

 

383 stroker lt4 upper end huge valves ported m6 trans

 

With an M6 and a stock driveshaft and rear you'll have around 15-17% drivetrain losses. Just an estimate, of course.

 

460hp SAE at the flywheel or so.

Bret

 

I've actually measured the HP loss in a setup running a 500HP 381 through a drivetrain consisting of a steel flywheel Street Twin, T56, chrome moly DS, 3.73 Strange 12-bolt, and street wheels/tires. Measured drivetrain loss was 12.6%.

That would put you at:

400 / 0.874 = 457 flywheelHP

Not sure what the affects of a "ported m6 trans" would be

 

yeh, 460 thats pretty close big dog

 

fwhp is only good when selling your car on ebay to the unknowing :P

 

Ya got to have FWHP before ya can have anything else.

 

Its nice to know though when Joe-Idiot asks you how many horspower it is. If you try to explain the RWHP is less than at the engine thing to most people, they will think your retarded ...