I have a 68 camaro rearend 10 bolt.GM53 3894859NF.I think it is a posi?What gear ratio? Any help would be appreciated much.

Hello, you need to get the axle code for us to determine what it originally came with. The axle code is on the front of the passenger side axle tube for the rear end, stamped into the tube itself. It can be hard to read sometimes so crawl under there with some steel wool or a brush when you do. :)

Thanks Christropher I will check it out and get back to you.

code will be here and after 30+ years who know's...

http://www.novaresource.org/images/rearcodeloc.gif