After reading deferent threads here and on the net I found out that these early 7 1/4 rear ends have a dry bearing that should be packed with grease when doing a brake job or possibly every 30.000 miles
MmmÂ…nope, don't believe so. I've been driving early A-bodies with 7#&188;" rear axles for twenty years, and this is the first mention I've seen of any such a thing. The inner and outer rear axle bearings are lubed by the rear axle oil, not packed with grease.
I'm also not seeing anything in your post that has me convinced your noise is caused by a wheel bearing.
Relatively speaking, sure, compared to larger rear axle assemblies, but the 7#&188;" is plenty adequate for many stock or quasi-stock slant-6 and mild V8 applications.
I believe 66 to 72 was the same width and a direct bolt in.
