.... Dave, 20% loss? Then I'd want to see TQ in the 390 ish range & HP in the 360 ish range.... But then now that I think about it the engine was dyno'ed without the altenator & a/c set up on so would it be even more than a 20% loss? My flywheel HP/TQ of 460/499 was GROSS not net! No wonder my car doesn't seem that fast! THANKS a bunch! Bill