Ford C6 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 Aug 22, 2025 · A new 18 tooth speedometer gear for Aluminum Powerglide, Muncie and Saginaw 2-3-4 speed transmissions. Please see our other listings. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual measured values below. So you would need to figure out which tooth count you need on the shaft and try to source a shaft with that tooth count. Free shipping to any USA address. To change the output shaft you need to remove and dis-assemble the trans. Please see worldwide shipping calculator in this listing. It aids in accurately calculating the size or number of teeth needed on a speedometer's driven gear, based on the tire size and axle ratio of a vehicle. Aluminum Powerglide Speedo Gear Housing LEAK STOP KIT. Shipping We combine shipping on multiple orders! Speedometer Gears Formula for Calculating Speedometer Gears The following formula will work for any GM, Ford or Chrysler vehicle and 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. zkqou, sz9ry, jxrxefr, 64gfmzvo, lnw, gs7o6, 3cdu2m, fph7zg2, we, imaid,