PAUL
COULD YOU TELL ME WHICH IS THE FRONT SHAFT BEARING NUMBER AND THE ONLY PART
WHO CARRYING THE PROP LOAD IS THIS SLEEVE WHO BEEN HEATED AND SLIDE IN
PLACE BEHIND THE FRONT BALL BEARING ?
TELL ME MORE ABOUT THIS RETAINING SLEEVE
JEAN

It is a standard Chevy style rear axle wheel bearing. Sealed.
The collar holding the bearing and taking all prop thrust loads
is pressed on with a 30 ton press. Standard procedure on all
live axle Chevies for the last 60 years or more. As I recall
the shaft OD is 1 3/8". With that INFO and the OD and width info
you should be able to look it up in a bearing catalog.

I don't have the critical dimensions on the collar ID.
Get it wrong and it will ruin your whole day.

Paul Lamar