the conversion is almost negligable, within a few of each other. And there is a big difference when saying you have 100hp and 100 rear wheel hp. Best measurement is always on a dyno and what it puts to the wheels. For example, my roush makes 375rwhp, but if you multiply but the std 15% drivetrain loss for a manual, you get about 431hp at the crank. So thats about 56horses lost between the crank to the wheels.
"Lead, Follow, or get the hell outta my way!!"
Blue 2004 ZX-10R
- 152.5rwhp 77.6rwtq - more than I need
Red 2003 Jack ROUSH Classic #8 of 50
- 375rwhp 381rwtq