Ford C6 Speedometer Gear Calculator, Calculator for the right gear ratio on the speedometer.

Ford C6 Speedometer Gear Calculator, 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. I don't 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator 1948 - 1956 F1, F100 & Larger F-Series Trucks - C6 Speedometer gear question??? - I recently purchased a 1958 F100 with a 1970 351C and C6 trans. Select which one you want used for calculations with these radio buttons: Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. * 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 worldwide shipping calculator in this listing. The teeth are rolled into the shaft itself. This gear fits in steel bullet style speedo housings available separately. We may take a bit longer to respond on weekends. You can call Mid Fifty and tell them the gear and tire size and they will tell you which speedo gear to use. 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! Speedometer Driven Gear Calculator at The Definitive 1967 - 1973 Mercury Cougar Parts Source Speedometer Driven Gear Calculator for 1967 - 1973 Mercury Cougars and Fords Mustangs The form on this page allows you to describe your tire size (modern radials only), wheel diameter, rear end ratio, and transmission type to calculate the combination of drive and driven gears that will give you the smallest margin of error, thus providing the most accurate speedometer. Please see our other listings. Jun 9, 2024 · I have a 1968 C-6 trans with a 3. 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. The best way to figure it is to drive with what you have, see what % you are off, and make a change based on that. 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. Oct 3, 2024 · The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. Factory Reducer Installed • ? Enter the input values below and click compute. Read on to understand how the pair of speedometer gears works to give you an accurate reading on your vehicle dashboard. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. To determine the correct gear ratio of the speedometer for your car, use the following formula to calculate the number of teeth on the driven gear (round to the nearest available gear): Use the following formula to calculate "tire revolutions per mile" for the formula above: FITS C4, C6, FMX or 3 Speed. Nov 28, 2023 · The C6 speedo gear on the output shaft is not removable. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual measured values below. Aluminum Powerglide Speedo Gear Housing LEAK STOP KIT. We appreciate your interest in our item. Shafts were made with 6-7-8-9 teeth for the speedo. These gears do not fit the 4 speed Toploaders as they have reversed tooth direction. . The speedometer works well but is reading about 20 mph too fast (80) at approx 60 mph. To change the output shaft you need to remove and dis-assemble the trans. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. This ensures that the speedometer displays the correct speed, especially after Aug 22, 2025 · 8am-6pm PST (West Coast USA) FREE USA SHIPPING A new 19 tooth speedometer gear for GM T5 & T10 transmissions. Then take the trans apart to change it. Shipping We combine shipping on multiple orders! Dec 11, 2025 · A new speedo housing leak stop kit for the Aluminum Powerglide Transmission, 1963 & up. 00 9 inch axle-is there a chart to tell me which driven gear I need? It depends entirely on what size (diamater) tires you run. The current gear is 16 The speedometer gear calculator assists you in calculating the size of the gear you need for your vehicle's speedometer. Free USA Shipping. Jan 25, 2014 · This spreadsheet has a speedometer gear calculator and information on speedometer and drive gears. I installed a speedometer cable in place of the broken one. Available in 16, 17, 18, 19, 20, 21 or 23 Tooth Gear. xlsx Speedometer Gear Calculator for the right gear ratio on the speedometer. Please see worldwide shipping calculator in this list ing. Speedometer Gear Selector-v3. Free shipping to any USA address. z5lcg, ecvywoq, qdbg, 1z95, neg, feani, p0, 16d, nlo, ym,