Thread: Has anyone upgraded a gm 7.5 and lived to tell about?

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Wouldn't put money into a 7.5 diff, Okay if you already have one and get a used right hand axle to put on the left side and narrow yourself. Only use for a cruiser, any performance you'll probably break it.

It is a lot better to go to the local pick and pull, find a Ford Explorer 8.8 rear diff. these diffs are quite affordable and almost as strong as a 12 bolt. The newest ones have rear disc brakes.

PS - Do a search on the web for Explorer 8.8 diff. You'll find plenty of info on them.

Thanks for the info, i will look into the 8.8 explored rears. Friend at work is a "ford guy" if I remember correctly he may have said they have 3.73 posi and 31 spline axle's? Need to have one side shortened and adjustable arms, but should still be ahead of the game, seeing parts and labor on a rebuild is easily $900-$1200. Thanks again!

Try this link.

http://rpmcanada.ca/performance/inde...into-a-g-body/

Hope it helps.

Thanks for the link! Going to book mark and check it out after work. Thanks again for everyone's help. Thought I have seen all the build threads on g body rears!