[Steve C.]

Agree, nice videos.

In the first video he mentions a way to figure out how much horsepower you can get potentially from the cylinder heads and a SuperFlow formula involving their CFM air flow.
Appropriately he also stated for his build that parts weren't just thrown together to meet the horsepower goal.

Related to this, Air Flow Research also uses a similar formula as in the video. However it predicts a normally aspirated engine's horsepower potential based on "intake-system airflow".
But note, and important, according to Air Flow Research they state it is based on the net cfm airflow delivered at the valve thru the carb, intake manifold and cylinder head.
Not the cylinder head cfm flow itself.

There are some caveats involved, and as alluded to in the video, and also relates to not just throwing parts together. Air Flow Research points out that actually reaching the predicted power level requires the engine to have the right compression, the right cam, a tuned exhaust, and a nonrestrictive carb and intake manifold. AFRs view is the combined lift generated by the cam lobe and rocker arm should equal the observed lift on the flow bench needed to achieve the desired intake port flow, plus a good exhaust port flow. Etc, etc.


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