Ford Speedometer Gear Chart, The document provides a speedometer gear usage chart for 7. Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. 11 or 4. They are not available from Ford Racing. 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. For more information or to discuss your speedometer related question, contact the experts at D&D Performance - 248-735-6220 Ford Speedometer Driven Gear Calculator Enter the input values below and click compute. This will calculate the speedometer driven gear needed to properly calibrate your speedometer. 73 and 4. 25, 4. 91, 4. 10 rear end gears. * 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 This table assumes that the transmission uses the common 7 tooth drive gear, and is applicable to most Ford Toploader, T5 and Tremecs. Enter the input values below and click compute. Speedometer gear uSage chart — 7. . The mesh is not quite right, so it's not uncommon for the teeth to wear off the gear. 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! 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator Rear End Axle Ratio (ie 3. The drive gears on T-5/T-45/SROD/ Tremec® manual trans mis sions can be changed. 5" and 8. The gears can be ob tained from any Ford and Lincoln dealer. Select which one you want used for calculations with these radio buttons: The part numbers of the various speedometer drive and driven gears are shown in the charts. 30 Rear End This calculator is from my friend Steve Hodgson, and it allows you to set up the complete speedometer system, including the drive gear, driven gear, and even an adaptor box if needed. This method is purely calculations-based and you should always check your manufacturers specifications. 881004 23 teeth - white note#1 Ford drive gears are machined into the output shaft on C3/C4/C5/C6 & AOD transmissions. 8" axles, detailing the recommended driven gear teeth needed for accurate mph readings based on various Ford Racing ring and pinion gear sets and axle ratios. Select which one you want used for calculations with these radio buttons: Use Measured Speedometer gear uSage chart — 7. 30 Rear End Reducer for 4 Speed Manual w/ 3. Note #1 - This is a retrofit gear to allow the speedometer to function with 3. You may need to remove your tail housing to determine how many drive teeth your transmission has. fu, 1a, za2ntm, rldwr, 4r, thzkx, mismh, 4je8, ckg2, m9, \