The Stovebolt Site Forums The Shop Area Engine Shop GM 12 bolt rearend

Has anybody used or know someone who has used a 12 bolt Gm rear in a AD truck.(1950) I hope to put posi in it, all the good stuff. What are the dimensions, will it fit my truck, what vehicle can it be found in? As for rims they're not going to be too crazy. I'd like to keep a Chev a Chev. Any help will be greatly appreciated. Thanks.

Camaro Rears are pleantiful and strong. Posi Units are available. Look for between 60 and 62 inches drum to drum (caliper to caliper)
Ed

a 10 bolt 8.5" would be fine also. Nova is another source

Gotta watch those Novas though, some of them were really narrow. I have one and I have to get some silly offset wheels to get the tires in the right place.
As for 12 bolts, you can find them in any late 60's SS version Gm muscle car; Impalas, Chevelles, Camaros, etc. Novas from the 70's had 'em too.
You don't really need a 12 bolt under your truck unless you plan to do some real drag racing or put sill ypower to the ground. My 52 is so light in the rear I can light the tires anytime I want to. This is hard on tires but not too taxing on the rear end!

I ran a 1964/65 truck 12-bolt truck rear end (they are different from the car 12-bolt) in my '54 3100 for about 10 years when I switched over to an open driveline. I had to take off the coil spring stuff, weld on the leaf spring pad, and have a drive shaft from a newer truck shortned, but the rear end fit just fine. I don't remember the measurements, but there was no discernable difference in looks.