Hi, y'all! Long time no see.
Anyways, I'd guess that if you run 28" tires, and have 8 teeth on the
drive gear on the tranny output shaft, then you should need the 22 tooth
gear.
Jim
> Could someone tell me which one of these would go to a 1959 Chevy 1/2 ton
> with 3 spd and 3.90 trans? Mine was not there so I have nothing to
compare
> to. Thanks, Tex Carr
>
> gm# color teeth
> 3987920 - blue - 20
>
> 3987921 - red - 21
>
> 3987922 - silver - 22
>
> 3860346 - black - 23
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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