This calculates the pounds of air per minute (mass flow) that and engine will consume at its maximum rpm.
| variable | description |
| cubic inches | the total displacement of the engine in cubic inches (see our cid calculator) |
| max rpm | the engines maximum rpm limit |
| volumetric efficiency | the volumetric efficiency is a measure of the efficiency of the engine moving the intake charge into the chamber and the exhaust out. Typical values are as follows: 2 valve head – 80% 4 valve head – 88% it is not unusual however to have VE’s of 95% or more in correctly built race engines |
| air mass flow | the total mass flow of air per minute that the engine will consume |
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