Don't give me the 12 bolt speech, I know all about it.

My 10 bolt has over 300 passes on it, most of them sub 1.7 60' times... the past two years in the low 1.6's. If I can get another 300 passes I'd be happy. If it blows, oh well, 12 bolt time.

It is just now starting to make a bit of noise and occasionally one wheel peels in the burnout box.

My gears are set just right as far as I can tell....

My question is, swapping the differential.. I know I have to pull the ring gear out, but assuming the upgraded differential (whether it be an eaton or an aurburn pro) is the exact same width, would I need to reshim?

How about the pinion gear, does it even need to come loose?

What all is involved, and will I just end up having to reset the gears anyways..

That all being said, Eaton or Aurburn Pro.

 

I changed my Auburn Cone out for a Torsen Zexel. There was no need to mess with the pinion, crush sleeve et al. I did have to side shim the new differential but this may not apply to you because I went to a different series carrier and used a spacer.

Checking the backlash is a simple thing and applying shims is nearly as easy. I can tell you this; I had no previous experience with what I had to do and it seems to have come out without a hitch.

You will need a magnetic base and dial indicator (1" travel type) to check backlash. These are cheap items any more. Mag base and indicator can be had for $20 - $30.

Placing the shims is really not a difficult thing at all. You basically need a decent assortment but like I said, the trial and error thing went really well for me. It's just a matter of sliding the shims in and out until you get the .006 - .010 backlash.

regardz