[blykins]

Lip,

Too many variables....but as in everything else, it's not wise to make generalizations.

Lots that go into engine acceleration: weight of rotating assembly, piston ring drag, external component weight (flywheel, clutch, etc.), and most importantly, how much power the engine makes. Take the engine off the dyno and stick it in the car, then you're working with even more variables....rearend ratios, trans ratios, exhaust, amount of air you're able to pull in, etc.