I have a 10 bolt out of a '87 or '88 IROC and it has the facotry posi and I guess a 3.23??....

anyways I am thinking about using it in my '52 chevrolet pickup thats recieving an LS6/T56 combo but I have some questions.

First off, can I redrill the axles and rotors to a 5 on 5.5 bolt pattern?

And how long will this axle actually hold up? The truck will never be on drag slicks or any kind of sticky tire, but I do want to be able to goof around and have fun on radials. I have another 10 bolt out of a '69 camaro, that I was going to use but its too narrow, and the center chunk of the camaro axle looks a good bit bigger than the one of the IROC. So Im guessing the IROC axle is the smaller 10 bolt, and weaker?

Any help is greatly appreciated, thanks.

 

its a 7.5 rear, its smaller and weaker, i am quite sure you cant redrill the stock axle flanges.

 

The 69 Camaro ten bolt has an 8.2" ring gear, which makes it quite a bit stronger than the 7.5". Really though, your best option would be to find an 8.5" ten bolt from a second generation f-body. These rears stand up to lots of abuse with no problems. They're really easy and cheap to come by as well, and they're wider than the first gen rear too. Posi carriers are quite common in them as well. They also have leaf spring perches on them, so if your truck uses leaf springs, all you'd have to do is cut and reweld them to the proper width for your truck springs. From an economical and also durability standpoint, that's the rear I would run.