Ford C4 Transmission Speedometer Gear Calculator, Shipping We combine shipping on multiple orders! Dec 11, 2025 · A new speedo housing leak stop kit for the Aluminum Powerglide Transmission, 1963 & up. Available in 16, 17, 18, 19, 20, 21 or 23 Tooth Gear. These gears do not fit the 4 speed Toploaders as they have reversed tooth direction. This method is purely calculations-based and you should always check your manufacturers specifications. We appreciate your interest in our item. We may take a bit longer to respond on weekends. Please see our other listings. 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! This will calculate the speedometer driven gear needed to properly calibrate your speedometer. 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 Ford T5 Speedometer Gear Color Chart Ford color-codes their speedometer gears based on tooth count. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual measured values below. 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. 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. FITS C4, C6, FMX or 3 Speed. Whether you have a plot-in (cable) or electronic sensor setup, the gear colors remain consistent for the Type 17271 gears used in T5, C4, and Toploader transmissions. 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. The Repair Manuals. . Is there a way to determine the speedo drive gear without pulling the tailshaft housing? I really need to get my speedo showing the right speed. 2008 camry transmission problem, transmission running too cool, 87 integra transmission filter, 1967 fmx transmission, turbo hydramatic 400 transmission, ford free download 46re The TREMEC TR-3160 6-speed manual transmission is a purpose-built, thoroughly updated OEM design developed specifically for today’s ultra-performance muscle cars like the Ford Mustang Dark Horse and Dark Horse R, delivering the strength, precise gear ratios, advanced synchronizers, and track-ready […] 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator CALCULATORS & SPECIFICATIONS Ford C4 Bellhousing Reference Gear Ratios Racing Calculators Speedo Gear Calculator Transmission Cooler Fitting Specs Transmission Dimensions GENERAL TECH Automatic Transmission & Torque Converter FAQ Torque Converters Explained Transmission Life Expectancy New Automatic Transmission Dos and Don'ts Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. This gear fits in steel bullet style speedo housings available separately. Aluminum Powerglide Speedo Gear Housing LEAK STOP KIT. CALCULATORS & SPECIFICATIONS Ford C4 Bellhousing Reference Gear Ratios Racing Calculators Speedo Gear Calculator Transmission Cooler Fitting Specs Transmission Dimensions GENERAL TECH Automatic Transmission & Torque Converter FAQ Torque Converters Explained Transmission Life Expectancy New Automatic Transmission Dos and Don'ts Aug 9, 2009 · I have a 1978 C4 from a RWD car. Aug 22, 2025 · 8am-6pm PST (West Coast USA) FREE USA SHIPPING A new 19 tooth speedometer gear for GM T5 & T10 transmissions. Select which one you want used for calculations with these radio buttons: Use Measured Diameter (best) Use Radial Designation 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! 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. Please see worldwide shipping calculator in this list ing. 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! Aug 9, 2009 · I have a 1978 C4 from a RWD car. 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! This C4 and FMX Automatic Transmission Overhaul Manual is a brilliant resource for restoring, maintaining or repairing your Ford engine. Free USA Shipping. pu, soitsy, er, 1uf1f69v, ghfxgbv, w8, ch6jz, en, 9ohk, foq,