69 8-3/4 into an A-Body... How??

[pastortom1]

Wasn't sure where to post the question.......

I can buy a complete 8-3/4 rear, drum to drum, from a 69 Wagon (B-Body)...........To put it in my A-Body (76 Duster), is it only a matter of moving the spring perches inward to make it work?

What's up wit' dis swap? (I'm putting it in the place of a 76 7-1/4 rear)....

 

[hemizach]

Every time I hear about someone using the b-body 8.75 they end up narrowing them as well. Don't know more than that though, sorry.

 

[pettybludart]

I,ve read that it can be done without moving the perches.PM Crackedback,he will know and help ya.

 

[crackedback]

Move perches and use wheels with more offset. The rear is 3" total, 1.5" each side longer than a normal A body 8.75.

I've spread the springs, 1/2" each side, before to get them installed. A body perches are 43 center to center B body are 44". Is it right? Moving them is better, but, it can be done if necessary.

Good luck with it.

Here's a great reference for CORRECT 8.75 lengths, etc.
http://www.moparts.org/Tech/Archive/axle/16.html