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This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give the engine's air intake volume requirements. Enter the designation of displacement, 1 for cubic inches or 2 for cubic centimeters. Enter the engine displacement size for the designation. Enter the anticipated maximum safe engine RPMs, typically known as red line. Enter the volumetric efficiency of the engine. (Most factory engines are a compromise between economy, efficiency, reliability and performance; about 80% at red line. Engines that have been tuned for improved performance or have a stronger performance camshaft and valve combination may have up to 92%. A competition roller cam and valve combination may yield 100% while blowers often achieve up to 115%.) Click on Calculate to finalize the calculation; values are updated subsequent to each field change. The value will be returned in Cubic Feet Per Minute required in both the current and optimum volumetric efficiencies (VE), based on the entry values you have made. The default values are for a typical mid 1960s to 1970s muscle car. To do another, click the Clear Values button and then enter a new value. Calculated accuracy of current Javascript enabled browsers is generally 16 places.
Version 1.2.2
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