TCI Speedo Driven Gear GM 21Teeth Red CHOPCMD 78:1) utilizes existing gear train

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

200 gph at 8 psi

Flow 1440 CFM for large cubic inch engines

Oldsmobile / Pontiac V8

134" wall mild steel tubing

TCI Speedo Driven Gear GM 21Teeth Red CHOPCMD 78:1) utilizes existing gear trainGM 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