www.jdrace.com

Hi Jim, thanks for the info. It sounds like a viable option for me. I will let you know when I'm ready to go ahead with the rear. I'd just like to have a couple of points cleared up. Would the '72 housing you'd use need to be narrowed? Isn't the later housing a bit wider than the '66? I hear ya abou...

Hi Jim, I'd like to get a quote on a custom rear for a '66 Tempest. I'm thinking of putting in an 8.5" 10-bolt with posi, 30-spline bolt-in axles and a 2.93 gearset. I'd like to have it as narrow as possible while still retaining the stock control arm mounting locations, maybe using Chevy II 12...

Why didn't they just sell you a posi carrier and reuse your old gears?

Here's some pics:

Hello everyone - new guy here. I have a GM posi differential that I'd like to ID. It has a 12-bolt 40-tooth 3.08 ring gear mounted with 7/16" LH bolts, and accepts 31-spline axles. One end has a "250" casting no. and an I195 date code. The other end also has the "250" and al...