Muncie 4 Muncie 4 Speed Speedometer Gear
They're supposed to be a gear on the output shaft that drives a speedometer gear. You will have to pull the tail housing off and look and see if How to calculate speedometer driven gear for correct MPH. The site that I used: Did you know you could just bolt overdrive on your old 3 speed auto trans? Gear vendor overdrive Buy Ciuouient 18 19 20 21 22 Teeth Speedometer Driven Gear and Bullet Kit,Gears are Used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 Speed, GM T5, Chevy SM465 manual transmission: Let's learn something ...