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Re: Rear end help needed please...
I wouldn't have a problem with a used carrier and spider & side gears, and have done just that a few times over the years w/o marking their locations. However new gears and a shaft aren't too expensive.
While you're at it you might consider a limited slip carrier. My 69's 12-bolt has run an Auburn cone-type diff for around 15 years, and it still works well. The truck will lay down two equal length tracks of rubber, and has no nasty habits on wet turns. I kept the original ring & pinion but used new bearings, shims, and crush sleeve. Probably could have used the original pinion depth shim.
Also, if those 3.73 gears are real GM and in good shape, they may serve you better than new imported sets.
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Mike
1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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