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Old 12-08-2003, 10:51 AM
elukas elukas is offline
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How to identify Oldsmobile 12 bolt?

I know the ring gear of a chevy 12 bolt is 8.8" and the oldsmobile o-type 10 bolt carrier is supposed to have an 8.2" ring gear...

BUT... is there any way externally to tell the difference between the 2 rear ends?

What I have here is a rear end on a 69 cutlass a guy is selling.

He's sent me pics and thinks its a chevy 12 bolt. Yes, the case has 12 bolts, but if I know my oldsmobile lore only olds cars built in the oshawa, ontario plant had chevy 12 bolts between 1968-1970. All the olds cars built in america are supposed to have had this strange weak o type 12 bolt that's more like a 10 bolt strength wise.

So can anyone help me out?

Thanks,

Erik
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