Originally Posted by JMAN311
Yeah, only 12-13% loss, instead of the typical 15%...might be more like 600 at the crank, or just less loss through the drivetrain. Maybe the auto's will put down 480-490RWHP....
12-13% is what regular M6 SS have for drive train loss since they dyno about high 360s low 370s. I think 580 hp is pretty accurate.
The autos are usually about 40 rwhp lower, so I'm guesstimating they an auto ZL1 would dyno about 460 ish.