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Topic Review (Newest First)
03-17-2013 09:34 PM
jim owens
rear end swap

Okay, So I can expect to spend between $ 1100 --$ 1300 Bucks. Now I Know at least what to pay. Thanks everyone--------------------JIM
03-17-2013 01:19 PM
big gear head A new posi is about $500 and a set of gears is about $200. You will need a good installation kit which is about $125. Labor will run about $300 to $500 in most places.
03-17-2013 11:41 AM
joe_padavano In addition to all the problems posted above with mounting point geometry and wheel bolt pattern, the 8.5 in the B-body wagons is several inches wider than the ones in the sedans, which are still wider than the 67 A-body axles, so unless you plan to have the tires sticking WAAAAY out of the wheel wells, this is a bad idea.
03-17-2013 08:21 AM
jim owens
rear end swap

Other than changing the differential fluids, I have never messed with rear axle. Roughly, how much am I looking at to change to a 3.23-3.42 posi by a professional
03-17-2013 07:56 AM
big gear head The angle of the upper controll arm eyes is different. You will have to fabricate some controll arms to correct the angle difference. You will also have to modify or replace the lower controll arm brackets on the axle tubes. The bolt pattern for the wheels is also going to be different. The "posi" is going to be the Auburn, so chances are it's pretty worn, and they can not be rebuilt. Look into rebuilding the BOP 8.2 rear end that you have instead of doing this swap. You may be better off with your rear end rebuilt. The BOP 8.2 is a pretty strong rear end.
03-17-2013 05:22 AM
jim owens
Rear end swap

It looks to be the same, with some measuring. I hope to find out if the control arm brackets are higher or lower
03-17-2013 04:33 AM
poncho62 Not sure, but I bet the mounting points for the control arms are way different.
03-17-2013 04:20 AM
jim owens
Rear end swap

I have a chance to buy a rearend out of a full sized 1993 Buick Estate wagon with a 3.23 posi, I was thinking about replacing my 8.2 ---3.08 "single tire fire" in my 2 door 67 Buick Skylark. Of course I will measure for drive shaft length/ yoke size/ axle to axle length etc.... Before I start pulling Both rearends out ---Is this do able, since there is a big difference in the years.
Thanks JIM

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