Calculate Head Air Flow From RPM And CID |
These formulas are from A. Graham Bell's Performance Tuning in Theory and Practice..
This is the "minimum" amount of Flow @ 28" needed to attain Peak HP at your RPM point
If you input 100(%) for Volumetric efficiency this will be close to the maximum rpm at peak HP at your CFM.
If you then input 127.5 (%) for Volumetric efficiency this will be close to the minimum rpm at peak HP at your CFM.