gear and pinion set up 8 3/4 489 case

There is a ton of information out there regarding this. I rebuilt my entire rear a year and a half ago. I was slightly intimidated at first, but after researching it and doing a lot of reading I was able to accomplish it with success.

You will need a few specialized tools, some can be made rather easily.

Here is some reading for you.

http://www.moparmusclemagazine.com/sch/04/8-3-4-gear-set-up/--2f---/articles/index.html

One thing to pay close attention to is make sure you mark the bearing caps in the carrier before you take it apart, they need to go back in the same orientation.

Here is a couple of tools you can make yourself, if you have some scrap steel and a welder.

One to hold the yoke, one for spanner.