Thanks for bringing this up.
Inspecting your axles is a good idea anytime they are removed from the housing, particularily the axle/wheel bearing surface. With the semi-floating design of the typical GM rear differential, the axle itself is subject to wear, since it is the inner race of the axle/wheel bearing.
If your axles are showing some wear, and you are also looking at upgrading to rear disc brakes, you might consider a set of aftermarket replacement axles. This way you can solve your axle/wheel bearing issue, the hub register issue as well as upgrade to larger 1/2" wheel studs all at the same time.
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Originally Posted by N2TRUX
If you are considering this conversion, you might want to look at replacing the old axles. The new axles can be ordered with the correct size drum register.
If you factor in the cost of machining 40+ year old axles, it might be worth applying that expense toward brand new ones. Something to think about if your putting all new parts in the housing.
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