Yes, my gut tells me this is the gist of it. Can anyone recommend a
book that addresses these issues? I'd really like to read more about
it.
Frank
>The specific reasons include, for example, the
> manifold vacuum is going to hell, which is indicative of
> volumetric efficiency, the result of turbulent flow which
> increases friction, inertia in stopping and starting the air
> mass, etc., etc. Even without valve float or any other
> extraneous reason, as you increase an engine's rpm past a
> certain optimum, horsepower starts to fall off. It's
> basically just a dynamic air flow problem; the same
> induction, heads, cam, exhaust, etc. will peak at the same
> cfm regardless of displacement or rpm.
>
> Bob Palmer
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