impala ss rearend

[84GP455]

Does anyone know if a late model impala ss rearend would fit into a gbody? I heard from somewhere that they are posi type rearends and will bolt up to a gbody. I also heard that some come with 3.08 gears which is the ideal gears for my application.

 

[85 Cutlass Brougham]

Nope, too wide. To get that rear in a G body app, you need one from a 84+ turbo Regal or 442. If they interchanged, we would all be running them as they are a HUGE improvement strength wise over the 7.5/7.625 axles 99.9% of g bodies came with!

 

[megaladon6]

do the control arms mount up clean though? too wide is a good thing for me. i want to use c5 rims which have a deep offset.

 

[joe_padavano]

do the control arms mount up clean though? too wide is a good thing for me. i want to use c5 rims which have a deep offset.

I don't know about the control arm geometry, but I'd be very surprised if it were the same. As for the C5 rims, the SS uses a 5 x 5" bolt pattern, the Corvette uses a 5 x 4.75" pattern (or possibly even a metric one now). The width difference is about 4" (58" vs 62", in round numbers).

 

[Someone_Much_Cooler]

I found a complete lt1 caprice in a u-pull it. Would the posi unit and axels work in my grand national/turbo regal rear? What about the gears?

 

[85 Cutlass Brougham]

The posi and gears would work, but the axles are too long.

As for width, just go find any B body made from 1977-1996 and measure it against a G body. They all share a common frame and axle width.