Performance Calculatorsa676da64_admin2022-10-26T12:27:41-05:00 JUMP TO SECTIONENGINE & FUELHORSEPOWERGEARING & SPEEDELAPSED TIMEATMOSPHERECLICK ICON TO USE CALCULATOR Size of Carburetor Needed (CFM) Change in Fuel Flow from Pressure Horsepower Calculator Horsepower Gain from Boost Pressure Rear End Gear Needed Speed from RPM & Gear Ratio Calculate 1/4 to 1/8th mile ET Calculate 1/8th to 1/4 mile ET Altitude Density & Dew Point TemperatureYou may also be interested in these helpful tools. Free tutorial videos for hardcore drag racers. 4-Link software used by the best teams in drag racing.