Pictures from Sunday evening. R&P stamping, 3.73 gears and 1987 date code.
The internals. Shiny springy thing.
Up on blocks, using a jack on each side as a safety backup (thankfully not needed).
Axle go bye-bye.
New axle in place, along with the cheapest shocks that money can buy. Monroe brand, purchased by my younger self in about 2010 for Big Blue. But Big Blue hasn't ever needed new shocks, and so they've just been sitting in wrinkled cardboard boxes. These combined with the almost-new takeoffs from the Suburban will give this truck brand new crummy shocks. And next time my older, smarter self will buy better quality ones.
These stub shafts have both sets of snap ring grooves. I didn't realize GM did this, as my other axles only have one groove or the other. This was significant when I did this conversion on the Suburban, as that axle only had the inner groove (used with automatic lockouts only). Was not able to run an inner snap ring on that rig.
Buttoned up with Mile Marker hubs. I have 3 of these hubs (used), and weirdly one of them uses a larger Allen wrench size, one that I wasn't able to find in any of my sets. Weird. It's about 3.5mm, but 1/8" was too loose to engage it.

I left that one on the shelf and used the two matching ones.
I've been working outside lately, given some nice weather. The grass isn't a great working surface, but it sure beats the sandbox! The Suburban now has the dark horse barn all to itself. Well, until snow returns.
