1G Removing 3 Bolt Rear Differential

[sleeper1ga]

I have a 90 with 3 bolt differential, I'm looking to swap differentials to an auto differential. I believe I know how to do the swap, but would like to know how from someone else who has done it(for I don't end up confused halfway). Any help is appreciated!
Thanks, Sleeper1ga

 

[acrazyjohnny]

If they are both 3 bolts Just change the center diff. If you're going to a 4 bolt then you'll need to swap everything over. If your rear is healthy then I would say swap the ring an pinion and while you're at it properly shim it and make sure they are contacting in the right area on the pinion gear. Also a great time to put in new bearings and seals for peace of mind.

 

[sleeper1ga]

Found this after looking a little longer, figured I'd share for anyone else looking as well
http://www.dsmtuners.com/threads/rear-differential-inspection-and-replacement.449954/

I am changing from a manual 3bolt to a auto 4bolt so I will need to pull the whole diff assembly
Thanks for your help, Sleeper1ga