Hey guys, well specifically Silicon212, a while back you helped me figure out all the specifications about the rear end in my Caprice. If you're willing to give it out, I was wondering where I could access the references you used to run the code so I could too have it as a reference. If possible it'd be nice to print something off so when I'm wandering through a junkyard I can have the reference right there with me. Thanks in advance!!

~Pete

This? (http://www.montecarloss.com/SSThunder/gmcodes.html)

This has a ton of information, most of which I could definately use (just got done bookmarking it) But I don't see the codes that can be found on the axel tube. Am I not looking hard enough?

This has a ton of information, most of which I could definately use (just got done bookmarking it) But I don't see the codes that can be found on the axel tube. Am I not looking hard enough?

The axle tube codes come from novaresource.org and don't cover much into the 80s, but it is the resource I used ... http://novaresource.org/axle.htm

Yeah, I remember that web page back from this thread (http://www.automotiveforums.com/vbulletin/showthread.php?t=644040). But when looking for my code i ran into the problem of not finding any info on it via the Nova page. Then you came up with a bunch of specs from a number of "pages" that corresponded perfectly with my car.

P.S. I just realized that nobody answered the question from that thread as to whether my rear differential was a 26 or 28 spline.

7.5" = 26 spline. 8.5" = 28 spline up through 1988, 30 spline thereafter.

As for the other 'pages', I just did a google on the codes.

Ah Google... I guess yah can't fail with that. I was confused with the splines because in terms of aftermarket posi units the 7.5 was available in 26 and 28 splines, so I wasn't sure what my car came with... But you answered that for me. Thanks so much!!!