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Calculator For Figuring Choke Point Of Ports

Todays date is 11/21/2024

Enter your Minimum Cross Sectional Area (CA) of your Intake Port

CA equals the minimum cross sectional area of your intake port. (length times width)
This is most times your push rod area, but not always.

Input you Bore/Stroke and CA please

To Figure Your Minimum Cross Sectional Area (CA) of your Rectangular Intake Port

Make all measurements in inches, and convert fractions to decimal numbers. Examples:
1-1/4 = 1.25 2-3/16 = 2.1875	>> >>	(1 4) + 1 (3 16) + 2

Rectangular/Square runners		To calculate the cross-sectional area of rectangular and square runner profiles, measure the width and the height of the runner, and multiply the two together. Measure in inches!
Runner width:
Runner height:
Runner Area:	square inches (calculated)

Area = Width X Height

To measure Round Ports

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