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From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by 89b2k
Asuming this is a manual trans, 15% drivetrain loss on the dyno would give you 340 hp at the crank if you dynoed at 289 hp. Looks good to me.
My stock LT4 (and all LT4's have manual gearboxes) dyno'd at 311. I think a 12% driveline loss is reasonable, but that would put me at around 350crankhp and I don't think it makes near that much.
I think '07's car is in the range of "normal deviation".