Originally Posted by speedfreak81
How would you know? Have you seen a bunch of stock LS2 cars on the dyno? Go spend some time over at LS2gto.com.......the LS2 was underrated by GM.....just like the 335i is underrated by BMW....335s routinely dyno what 280hp to the wheels stock, that would mean that there is only a 6.5% drivetrain loss in your car?
There are MANY LS2 cars that dyno 340-350 on a regular basis, I've seen some in the mid-high 350s.
GTOs were produced to be fast cars so why would GM underrate it? BMW had a lot more reasons to underrate their car. Before I posted, I looked up dyno charts on drag times.com and the only stock GTO I found 05+ was around 330 rwhp.