TCI Speedo Driven Gear GM 21Teeth Red CHOPCMD GM A-Body 1966

GM A-Body 1966

134" wall mild steel tubing

6 total channels available - tachometer

78:1) utilizes existing gear train (no belts or chains)

QA1's Ultra Ride shock is the best for rodding

TCI Speedo Driven Gear GM 21Teeth Red CHOPCMD GM A-Body 1966GM Powerglide 200C 375B 475 21 Tooth Speedo Drive Gear.. 21 Tooth GM Speedo Drive Gear. Speedometer gears include both the drive gear and the driven gear. The drive gear refers to the gear that is on a transmissions output shaft. The driven gear is located in a removable housing, usually in the tailhousing, of transmissions. Be aware that some transmissions will have different driven gear housings depending on the tooth count of the driven gear. TCI