8.5" 10 bolt posi
 

My '68 Chevelle (cruiser) has an open 8.2" 10 bolt & I'd like to upgrade to a 8.5" 10 bolt posi. I think this was called the "Corporate" rear end & they were used in GM cars & trucks from '71-'96. Does anyone know if there is a direct fit for a '68... 58.5" flange-to-flange with coil spring perches? Beacuse I'll rebuild it before putting it in, gear ratio doesn't matter.

71' - 72' Buick Skylark for sure, from what I have read. Oldsmobiles are a good place to look also in that vintage from what I have seen. 73' - up will not bolt in directly, they made some changes to the mounting. I was in salvage yard a few weeks ago, they had a decent 71' skylark - factory 350 2bbl car, I looked under it and it definitely had a factory 8.5 rear. My father's LA built 72' Chevelle had an 8.2 from the factory, 307 2bbl. Some claim they started to install them starting in 1970, I have yet to see one factory installed in a car that early.

HTH