Stage engines had the oversize valves (what most people are talking about when they talk about upgrading their engines to stage specs), hotter cams (nothing like what you can get aftermarket though) and re-jetted q-jets.
the oversize valves usually take up more room in the combustion chamber giving Stage engines slightly higher compression as well as better breathing.
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Vladimir Lenin
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)
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