[bandit37388]

I. Gm drive gears (gear on end of cable)

Part Number No. of teeth
3987917 17
3987918 18
3987919 19
3987920 20
3987921 21
3987922 22
3987923 23

II. GM driven gears (the gear in the transmission that drive the Speedometer cable gear)

Turbo 350
Part Number No. of teeth
6261783 8
6261782 9
8629547 15

Turbo 400
Part Number No. of teeth
8629549 18
9629547 15
8440055 8