Back to the diff, I've seen write-ups that say to use a billet cap on the driver's side bearing. The price seems kind of high at $100, but if it gives any insurance against future failure, seems like it would be worth it
All the OEM 8 3/4 third members are made of cast steel according to what was said at the old Mopar drag race seminars back prior to 1980 so adding a billet steel cap to them is a good deal
to do instead of counting on the stock cast steel cap with the adjuster bolt hole in the center of it to hold up to constant drag strip abuse
I've used 3rd members with a single steel cap on the drivers side and one with both steel caps on it, neither one of them prevented me from cracking the ring gear teeth at the outer corners though on all of them when you start going fast and pulling 3 to 8 inch wheelies on every run
I ended up going to a Dana 60 after breaking a lot of 8 3/4 parts in that car
No more problems ever after that
