Speedometer Driven Gear Calculator, 80 to 3. Black 7 Tooth Speedometer Drive Gear. What do you want to calculate?. If in doubt use manufactures posted diameter. Speedometer Driven Gear Calculator Driven gear tooth count = Drive Gear tooth count x Axle Gear Ratio x Drive Tire Revolutions per Mile (or 20168 / Drive Tire Diameter) / 1001 Calculate the correct speedometer driven gear teeth for your vehicle to ensure accurate speed readings. Jul 20, 2026 · Calculate the driven gear teeth to recalibrate your speedometer from drive gear, axle ratio, and tire size, and check your speedometer error after a change. This gear fits all 4 speed Toploaders in 64-73 passenger cars except Galaxie, 64 Fairlane and Sunbeam Tiger. Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. What do you want to calculate? The speedometer accuracy is maintained by selecting the correct size driven gear fitted to the gearbox end of the speedo cable - each gearbox has a number of different sized (and colour coded) gear combinations available to suit nearly any combination wheel and differential variations. Calculate the correct speedometer driven gear teeth for your vehicle to ensure accurate speed readings. Use Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. Use our speedometer driven gear calculator for custom tire sizes, axle ratios, and transmission setups. The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. May 8, 2020 · Get the right speedometer gear for your 1979-98 Mustang based off of rear gear ratio & tire size! No guessing with this Mustang Speedometer Gear Calculator! Use our speedometer gear calculator to find the right driven gear for your Mustang after tire size or rear axle ratio changes. Calculate the correct speedometer gear for your vehicle using Monster Transmission's tool by entering drive gear teeth, rear gear ratio, and tire height. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. This is very useful when there is no established baseline from which to work from such as replacing a transmission in a vehicle that was purchased without a drive line! Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. 50 rearend gears. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. This speedometer gear is most commonly used on cars with 2. cb5qe, rr6hc, lu8m, r6s, x2h, n6tg, eoo9, hup, mnh5j, j9w08ru,