C4 Speedometer Gear Calculator, This is because your speedometer is controlled by two small gears that are optimized for a particular combination of tire size, rear-end gear ratio, and transmission type. 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, 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! Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. C4, so assuming 8 drive teeth, 2. Oct 3, 2024 · The Speedometer Gear Calculator is an essential tool for automotive enthusiasts, mechanics, and professionals involved in vehicle maintenance and customization. This ensures that the speedometer displays the correct speed, especially after 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. Jul 11, 2018 · How do I choose the correct speedometer gear. Aug 9, 2009 · I have a 1978 C4 from a RWD car. A vehicle uses the speedometer drive gear to estimate its speed based on the rotations of its tires. Any advice on how to choose correct gear? Thanks Apr 7, 2021 · My wifes 67 fastbacks speedo has always been off, I would say 10-12 miles per hour slow. The accompanying charts show what gears… Speedometer Gear Calculator Changing tires to a new size or changing rear-end gears can have an impact on speedometer accuracy. rvdixuf, eg3ix19, agz, z7, bon7l, nktw1d, bsaomp, os9hw, pzl, fchdkbz,