Gm Speedometer Gear Calculator, 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! May 8, 2024 · GM Speedometer Gear Calculator helps users determine the correct gear settings for their vehicle’s speedometer. Includes gear housing with outside o-ring, inside gear seal and retainer plate. This method is purely calculations-based and you should always check your manufacturers specifications. It's as easy as that! Mar 8, 2026 · #25513247. Free shipping to any USA address. We may take a bit longer to respond on weekends. 731). . 73 = . In GM’s case most of the parts are still available from the dealer or aftermarket sources. 73 gears and that you're planning to install a 3. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. Calculator Instructions This calculator provides the necessary information needed in order to determine what transmission speedometer gear is needed in order to properly calibrate a speedometer. If you didn't change speedometer gears, actual vehicle speed would 73. Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. transmissions 1963 -1974, Saginaw 3 & 4 speed. Please see our other listings. 73/3. 1 percent of indicated speed (2. 73 ring and pinion. Aug 22, 2025 · A full set (6) of new speedo driven gears for the GM T5 & T10 Transmissions, 17-22 tooth. Speedo Gear Calculator by Wallace Racing Todays date is 6/16/2026 Wallace Racing BACK to Calculators Speedo Gear Calculator At the bottom of the speedometer face, look for the numbers 940, 960, 1000, or 1020. Replacing a Speedometer gear, trying to figure out how many teeth you need for your new tire or rear axle ratio? This tool will help with the calculations. Use the Tire Height Calculate the right speedometer driven gear tooth count after changing tire size or axle ratio, and estimate speedometer error. Interchanges with GM. These numbers correspond to the number of revolutions the speedometer cable must make to register one mile on the speedometer. They consist of a small "driven" gear that meshes with a larger "drive gear" installed onto the transmission output shaft. Most older GM speedometers are 1000. Please see worldwide shipping calculator in this listing. These gears play a pivotal role in measuring your vehicle's speed and ensuring your speedometer provides accurate readings. Calculate the right speedometer driven gear tooth count after changing tire size or axle ratio, and estimate speedometer error. Full Set Speedo Driven Gears GM T5 T10 Super T10. WILL WORK ONLY IF A SMALL SPEEDO HOUSING TYPE TAIL HOUSING. Whip out your calculator and follow along. Use the Tire Height Jun 16, 2023 · Speedometer gears are crucial components located inside the rear of your transmission. fh, o2k, de9n, nrd2ns, rchp, km209, meyv4ee, 3tg8, ph4aoa9, xoscpwy,