Not my comment. but from Mopar Action magazine under Tech Topics, Rick Ehrenberg, the infamous "Green Bearings" are not recommended except 1/4 racing, as is also highlighted here by other comments. When I replaced the seals and axles bearings in my '65 Belv with an 8 3/4 and a '489 carrier, used the Timken bearings. No issues.
If you want to realize what ball bearings in a "cage" can do... think back to 1999-2000 when some bean counter at H-D saved money by putting ball bearings in them. Fiasco that resulted in a recall to tapered / Timken type bearings.
If you want to realize what ball bearings in a "cage" can do... think back to 1999-2000 when some bean counter at H-D saved money by putting ball bearings in them. Fiasco that resulted in a recall to tapered / Timken type bearings.