so I have my tranny apart because the speedo was not working, the speedo gears are out now and in my hands they don't mesh?? the drive gear (gear on the shaft) is a worm/spiral gear and the driven gear (one that is threaded to the transmission that the speedo cable goes on) is a 12 tooth, the teeth on it are too big to mesh with the drive gear?? I am assuming that somewhere down the line someone has changed one or both of these gears, does anyone know what came original on these transmissions??? it is a 3 speed trans off of a 1951 chevy 3100 with a 216. gear ratio's are all original.

your help is appreciated!!!

Last edited by misfits; 06/05/2013 1:13 PM.