rear disc from grand cherokee on a 8 3/4

archlab said

Question (& maybe one of ya'll addressed it already): "What is stopping someone from pulling the entire Rear End ***'y from the Jeep & swapping it into the A-Body?"
I'd imagine that some mods will be necessary, but just from my (half-axxed) estimations, the Jeep RE should be a compatible width, etc, etc

Click to expand...

I'm thinking nothing but a little fab work. I've toy'd with the idea for my Dart (same direction, just new stuff) and think I will actually put one in my '70 Satellite.

The WJ Model 44 axle has a 59.5" track width and a '62-'70 B Body is 59.2". So... close enough.

The Model 44 is a Spicer/Dana 44 with tons of aftermarket support which makes it a good choice. Cut all the coil over and other mounts off, weld on (or use circle track bolt on) spring perches and call it good.

You will now have a B Body rear in your A Body. Good rear disks, a nice limited slip and either 3.55 or 3.73 gears.

If you want to go a bit narrower, then use a XJ (Cherokee). I believe they have a 58" track, the Dana 44 only came in towing/heavy duty optioned vehicles and they are the early models ('89 and earlier). These would be leaf spring as well with less stuff to cut off. But, you will have to get all the rear disk stuff because I believe these were drum only. Gear ratio would be 3.07 or 3.55. Car-Part.com lists a 3.54 as well, but not sure what the differences are with that assembly.

Thanks,

Kevin Wesley