CFM Calculator for your carb!

Enter the required information into the black boxes and click results!


Volumetric efficiency is basically how well an engine breathes with the head work, intake and runner volume.
Street stock engines use .80, full race engines use .90 for baseline. 

Cubic Inches:  

RPM that you would like to turn:

Volumetric Efficiency:

CFM Needed for this engine:           

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Calculators compliments of HRS Applications for use for The Dirt Forum "Users"!

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