Re: Oldsmobile W27 rear end differential housing
That's one of the neatest options that Oldsmobile ever did. I'm pretty sure that the entire aluminum center section was one-year-only (1970) but when it came back in 1971-72, it consisted only of an aluminum rear cover on a standard iron axle.
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1962 Biscayne O-21669 MKIV/M-22
1962 Bel Air Sport Coupe 409/1,000
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