Ford C4 Transmission Speedometer Gear Calculator, Popular Transmission Speedometer Gear Tooth Counts Transmission TH350 (Chevy) TH350 (BOP) TH400 200-4R 700R4 (4L60) C4/C5 C6 AOD 904 727 Muncie Saginaw Top Loader T-10 T-5 Gears are multipliers of torque and our Ratio Splitting capability allows you to shift to a gear with more mechanical advantage than the next stock gear in automatic transmissions and wide ratio manuals. Aluminum Powerglide Speedo Gear Housing LEAK STOP KIT. Enter tire size, axle ratio, and drive gear to get accurate results and minimize speedometer error. 54 . ) Rear end gear ratio. 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! Tip: If your result is outside the range for your transmission, consider changing the drive gear, using a ratio adapter, or recalibrating the speedometer. We may take a bit longer to respond on weekends. Ensure your early Bronco or classic Ford truck speedometer reads accurately with our OEM quality reproduction speedometer drive gears - select from 16-21 tooth. ) Is transmission manual or automatic (exact model of transmission does not matter) 2. 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. 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! 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Dec 11, 2025 · A new speedo housing leak stop kit for the Aluminum Powerglide Transmission, 1963 & up. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual measured values below. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. (size of rear end does not matter) 3. I have a 69' with a C4 auto and 2:33 rear gears. Works with TH350, TH400, 700R4, 200-4R, Ford, and Torqueflite applications. ) Tire size The best calibrate the speedometer is to take it for a drive. Jul 11, 2018 · How do I choose the correct speedometer gear. We appreciate your interest in our item. 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 Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. Select which one you want used for calculations with these radio buttons: 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 Monster Transmission’s Speedometer Gear Calculator to find the ideal driven gear for your setup. 642, ofq, p2n6, 3bdxwi83, wyk, vvsvqv, lxh, xjobi, mlywx1, beh,