TCI Speedo Driven Gear GM 21Teeth Red CHOPCMD They're made from billet steel

They're made from billet steel and use a Torrington thrust bearing for superb performance and reliability

6 total channels available - tachometer

GM A-Body 1966

High Quality Grade-8 Bolts w/ Black Oxide Coating

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

TCI Speedo Driven Gear GM 21Teeth Red CHOPCMD They're made from billet steelGM 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