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Old 06-12-2017, 06:50 PM   #20
Pontiac1976
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Join Date: Oct 2015
Location: Ottawa, Ontario, Canada
Posts: 750
Re: 10 bolt to 12 bolt swap

If I remember right 82 up only have the 10 bolt.
73-81 you could get the 12 bolt
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1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed
Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.
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