bop positrac 1972 cutlass supreme

x75

New member
Aug 3, 2022
1
0
1
Ive got a supreme with a factory posi, and I an wondering are they any good? It has been running behind a built 454 for a few years but seems OK. I am parting out the car and wonder if its worth the trouble to sell the differential separately or just leave in the car as parts. Seems like a GTO or something might use it.
thanks
 

Olds 307 and 403

Well-known member
Oct 4, 2018
872
262
63
Melville, Saskatchewan
The factory posi are good and rebuildable. Post on a board like Classic Olds. It will fit any Chevy style 8.5". The bolt in axles make it a desirable rear end. What gear ratio is in it? Where are you located?
 

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