So I originally thought I had a US built Chevrolet 12 bolt rear series 2 .Meaning that without using spacers the 2:73 ratio was the highest gear set I could use.
Now that OPH has explained that the evidence in fact proves I have a 1969 Canadian built GM 12 bolt 2:73 posi out of a Buick/olds built for Canadian use. I'm wondering if I'm still at my limit for high gears with the 2:73 in this rear?
Really wanted something in the low 3's posi.
Also the yoke is damaged on the case. The u joint measures 3 5/8 across which I think should be the 1330. Which I believe is what OPH said I should expect. Yoke appears to be early u bolts not strap. Any idea where to find a yoke? I haven't cleaned the one I got to see if numbers exist.
Thanks Chris
Last edited by Skidmark; 08-19-2023 at 05:59 PM.
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