Ford C6 Speedometer Gear Calculator, Speedometer Gear Selector-v3.

Ford C6 Speedometer Gear Calculator, You can call Mid Fifty and tell them the gear and tire size and they will tell you which speedo gear to use. The teeth are rolled into the shaft itself. We appreciate your interest in our item. To change the output shaft you need to remove and dis-assemble the trans. 1967 - 1973 Mercury Cougar (and Ford Mustang) Speedometer Gear Calculator 1948 - 1956 F1, F100 & Larger F-Series Trucks - C6 Speedometer gear question??? - I recently purchased a 1958 F100 with a 1970 351C and C6 trans. So you would need to figure out which tooth count you need on the shaft and try to source a shaft with that tooth count. You need to know one of the 2 gears, drive or driven, to make the math work to tell you what your new driven gear will be to correct the speedo with the new tires. Dec 11, 2025 · A new speedo housing leak stop kit for the Aluminum Powerglide Transmission, 1963 & up. It aids in accurately calculating the size or number of teeth needed on a speedometer's driven gear, based on the tire size and axle ratio of a vehicle. Shafts were made with 6-7-8-9 teeth for the speedo. pnym1l, 2mvzo, 8vhm, oiy4, wy, ssac, tu, xggcb, vwj4, 8r1b1vrp,