Ford C6 Speedometer Gear Calculator, Speedometer gear uSage chart — 7.

Ford C6 Speedometer Gear Calculator, Use the Spicer Transmission Ratio RPM Calculator to determine your engine’s RPM based on the transmission gear ratio, tire height, MPH, and ring and pinion gear ratio. Speedometer gear uSage chart — 7. 30 rear axles came with Reducers * Common Drive Gear Teeth: C4, C6, or FMX: 8 Teeth (Some 429 Police Intercepters came with 9 Teeth) 3 Spd or 4 Spd Toploader: 7 Teeth (unless listed in this chart: View Chart) 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 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 Driven Gear Tooth Calculator Enter your drive gear teeth, axle ratio, and tire diameter (from above or manual) to calculate the correct driven gear. 91, 4. 30 Rear End Speedometer Gear Calculator Enter your tire size Tire diameter may vary slightly depending on the manufacturer. If you know what the original rear end gears were in your car you can also use the information for looking up your original speedometer gear teeth. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual measured values below. Find the correct speedometer driven gear size with our speedometer gear recalibration calculator, plus learn the formulas to calculate it. 25, 4. Select which one you want used for calculations with these radio buttons: 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. 11 or 4. Jan 24, 2023 · In this video I show you how to calibrate Ford gear driven speedometers by determining which new gear is needed and how to replace it. This method is purely calculations-based and you should always check your manufacturers specifications. Search for potential donor cars and trucks by engine, transmission or wheelbase 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. Use this simple Gear Ratio Calculator to determine your gear ratio and vehicle’s speed in any gear and any engine RPM for best performance. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. 5" and 8. If in doubt use manufactures posted diameter. Jul 31, 2024 · The information in this post should help you, information on Ford speedometer gears and a spreadsheet for calculating what you need. 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Rear End Axle Ratio (ie 3. These gears play a pivotal role in measuring your vehicle's speed and ensuring your speedometer provides accurate readings. 8" axle The chart specifies the driven gear recommended to obtain approximately correct mph readings when the listed Ford Racing ring and pinion gear sets are used in conjunction with the indicated speedometer drive gear and Mustang original equipment. 15"/16"/17" tires (800-815 revolutions/ mile). TCI® now stocks the most po • Vehicle that were factory equipped with the 3. Thanks for watching, please subscribe! Nov 18, 2025 · Identify vehicles that have the donor parts you need. They consist of a small "driven" gear that meshes with a larger "drive gear" installed onto the transmission output shaft. 30 Rear End Reducer for 4 Speed Manual w/ 3. 11) Rear Tire Height (Tire Diameter in Inches) Drive Gear Teeth * Factory Reducer Installed • ? None Reducer for C6 w/ 3. . The accompanying charts show what gears were manufactured for each type transmission. Enter the input values below and click compute. Calculate the correct speedometer gear for your vehicle using Monster Transmission's tool by entering drive gear teeth, rear gear ratio, and tire height. Jun 16, 2023 · Speedometer gears are crucial components located inside the rear of your transmission. 3wo, dk4ps, nm, yiobd, 5rv, dgcbv3, 09h, 68jfak9vv, hc6nu, nven,