Quote:
Originally Posted by wstar
(And I wouldn't worry about the Dyno numbers. Factory freak-ness is never more than ~1%, the rest is just different dynos and different atmospheric conditions, or factors other than the engine (e.g. gearing, wheel size/weight, etc)).
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The factory freak is a myth -- here's the kernel of truth (at least to the best of my knowledge): Older GM cars occasionally had a different cam put in on the assembly line when designated cams were short on supply, and because so many parts were interchangeable. If the different cam happened to have a wilder profile, you lucked out with a more powerful engine.