Originally Posted by SUX2BU
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.
But isn't that using the factor from a L99 auto comparison vs a LS3 m6 instead of an auto CTS-V vs m6 CTS-V or did I misunderstand.