8 3/4 Sure Grip Info

George R said

How difficult is it to set up the rear gear pattern once you install one of these units into an open rear? Does it require any special tools like dial indicators etc?
Last diffy I had rebuilt, I had to have a pro set the pinion depth on my 12 bolt Chevy. I know next to nothing about setting up a Chrysler rear end.
Thanks,

George

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George, although you do need some specialty tools to set the pinion depth, changing the rear from an open to a SG will not change the current pinion depth of the open set up. You should be able to dis-assemble the rear, keep the shims in place that set it in the first place and re-assemble it just like you took it apart and just add the suregrip unit. Of course you should still check the wear pattern with some set up cream, and this is only good for the shimmed units like the 741 and 742 case, as the 489 uses a crush sleeve to set the pinion depth, although they now have a hard spacer to replace the crush sleeve. Not a hard job to do, but I wouldn't DIY unless you are going to be perfectly comfortable with your work. Hate to go back in right away!!! Good luck, Geof