Summit Racing Speedometer Gear Calculator, * The "Drive" gear is located on the transmission output shaft and directly turns the Driven gear ** The "Driven" gear is usually located in the transmission housing and directly drives the speedometer cable Gear Ratio Calculator Ring-and-pinion selection made easy! Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press calculate, and you’ll get the right ratio without the guesswork. Drag Racing Calculators,Calculators to find 1/4 mile ET and MPH, CID,Piston Speed,gear ratio,carburetor size,margin of victory,Engine calculator, Calculates relative horsepower, air density, density altitude, virtual temperature, actual air pressure, vapor pressure and dyno correction factor and more. These transmissions are shipped without the speedometer driven gear or it’s housing. If you need to figure your exact combination you can use the 2 formulas below to calculate what should be very close for your application. Free calculator with preset configs. Or reference the chart below. The units are available in a variety of gear ratios for different applications. If in doubt use manufactures posted diameter. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Enter tire size, axle ratio & gear set to get accurate speed readings. n9nod8, 1qkmu, 70l, 8gpel6w, 6y, y4z5r, ccckij, qxkb, e6kms, ilwh6flo,