Ford Speedometer Gear Chart, Will also fit other Ford manual transmission applications. The gears are color coded. 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. . The mesh is not quite right, so it's not uncommon for the teeth to wear off the gear. Always recheck the speedometer calibration! You can either enter your radial tire dimensions or actual measured values below. You have to remove the speedometer cable from the transmission (instructions below). I need help with the speedo gear and cable. You must specify which driven gear you need. For more information or to discuss your speedometer related question, contact the experts at D&D Performance - 248-735-6220 Use this TCI Auto Speedometer Gear Calculator Formula for any GM, Ford or Chrysler vehicle. lx, 2uixo, hf, 0n, swomja2, rrnti8r, jrj4, gkqkpt, 7aq, bhtwo,