info on a factory posi

455_82malibu

Pro Stocker
Thread starter
May 19, 2006
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WISCONSIN
Ill run it and toss it if it does start to slip, but the cones look like new and I plan putting a small tack weld on the outer shell where its bolted toghter, If my stock s clip posi is holding up this has to be an upgrade.
 

455_82malibu

Pro Stocker
Thread starter
May 19, 2006
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36
WISCONSIN
I have a GN /442 8.5", im just using the caprice guts...they come with 30 spline posi's
 

malibooyah

New Member
Dec 2, 2011
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anybody know where I can get a posi and 3.73 gears for my 1980 Malibu? I was told with my almost stock rebuilt 350 I don't need to upgrade to 8.5,instead beef up my factory rear.
 

468malibu

Frequent Racer
Sep 13, 2003
425
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0
Binghamton NY
I have a factory posi in my 'bu, but need to find a 9" first. Also has just 3.08s I think...
 

MalibuMan1979

Frequent Racer
Aug 17, 2008
506
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flint, (lapeer), michigan
malibooyah said:
anybody know where I can get a posi and 3.73 gears for my 1980 Malibu? I was told with my almost stock rebuilt 350 I don't need to upgrade to 8.5,instead beef up my factory rear.
check the junkyards. i found a 7.5 posi in a elcomino. bought a richmond 3.73 gear set. hasn't broken yet.
 

LSJM1

Amateur Racer
Aug 27, 2008
134
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0
Atlanta
I just picked up a 8.5 rear from a 92 caprice same deal 30 spline auburn I was going to use the posi unit in a 71 cutlass 8.5 rear I have and buy new axles
The caprice rear is about 1" wider than the A body rear which is 1.5" wider than a g-body rear
The upper ears are way wider than a or g body you would def need some custom upper arms
I never took an Auburn unit apart do you pull the end plate off it or leave it together and work it like an eaton
 

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