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Old 11-02-2016, 09:48 PM
oldsmobiledave oldsmobiledave is offline
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Join Date: Aug 2015
Location: Cochrane Alberta
Posts: 138
Default 8.5 vs 8.2

Quote:
Originally Posted by rexs73gto View Post
My 73 came with 3:08's in it new & all i had to do was change the gears to the 3:73's that are in there now. As long as it's a 3 series carrier you can bolt up to the 3:90's in it with no other parts . When you go to the 4 series gears then you will need a different carrier or a ring gear spacer. That has been my experience so far with changing gears.
But that is for an 8.5" rear end where the 3 series carrier works with 2.73 3.08 3.23 3.42 and 3.73 OEM gear sets as well as the aftermarket 3.90 and 4.10 ratios. Not the case on the 8.2" carrier discussed by the original poster.

__________________
Own many Olds including
1972 442 W-30 (last 4 speed W-30 built);
1970 Cutlass W-31 #s match auto 3.91s;
1965 442 461 cid BBO & Richmond 5 speed;
1987 442 with 470 cid SBO 11.37 @ 119.4;
1972 442 524 cid BBO race car 10.89 @ 122.5;
1973 442 350 automatic black & white;
1980 GMC 468 cid BBO powered.

Past owner of an original paint 1973 Esprit.
Looking for the keeper 1970-1974 Pontiac F body.