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Head flow is king, period. If you've got a good set of heads you will make power.


It's not that simple...



Not that simple but it's a damn good start.


Only if other key things are taken into account. Just because you've got a "good set of heads" that flow well doesn't mean they're the right set of heads for an application.

Put a set of 350cc ported Indy 440-1s on a stock-stroke 400 and you'll have a gutless pig below about 5500 and needs to rev to 8000 to even come close to making the heads "work". Not my idea of a good combination...

I'll take an "OK" set of heads for the right application over a "good set" of heads for the wrong one.

(And this is what results when some people make really generic - and flawed - statements that more detail-specific people take exception to. )



It's generic on purpose. If you have a good set of heads you will make power. "Good" would mean they're matched to your application. I didn't say good flowing, I just said "good" for a reason.

I know what you're saying.

Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street