3/26/2017 06:55:51 PM

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Carb/TBI CFM Calculator


Required Intake CFM

    This calculator will help you determine your engine's intake volume requirements.
Enter the engine's displacement, Volumetric Efficiency, and its redline.
The calculator will tell you the cfm range you need.
    VE is affected by intake type, camshaft grind and type, boost, and many other factors.
    Here are some guidelines.

Related Calculators:
    Calculate Engine Displacement

Calculate Required Induction Airflow CFM
   Use to determine how large a carb or throttle body to run
Engine Displacement (cubic inches only):  cubic inches
Manifold type:  Dual Plane Single Plane IR (no plenum)
Volumetric Efficiency @ red line:  %
Red line RPM:  RPM
Input CID, RPM and VE, Please




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