You may be able to use axle saver bearings. Some of these axles use the axle itself as the race for the wheel bearing. After a while the axle gets a notch due to wear.
If there is play in the axle bearings due to axle notching the axle saver bearings will offset the area where the bearing contacts the axle surface.
I've used these many times on older Cadillac rear axles with good results. Yours is similar IIRC. Plenty of people here would know.
First you need to verify the problem is the axle bearing. Similar sounds can come from worn ring and pinion and/or some hack mechanic replacing pinion seal without knowing what they were doing.
My 1980 Cadillac has 70k original miles and is just starting to make a little noise from the wheel bearings.
If there is play in the axle bearings due to axle notching the axle saver bearings will offset the area where the bearing contacts the axle surface.
I've used these many times on older Cadillac rear axles with good results. Yours is similar IIRC. Plenty of people here would know.
First you need to verify the problem is the axle bearing. Similar sounds can come from worn ring and pinion and/or some hack mechanic replacing pinion seal without knowing what they were doing.
My 1980 Cadillac has 70k original miles and is just starting to make a little noise from the wheel bearings.