Q: Would you happen to know the Rollway bearing number for the rear main? I would like to find a good replacement for the Austin rear main.

A: The rear main is A/B factory drawing and part number A-1345 and it is a
"Rollway Bearing Inc. #W-88 or Schubert". This is a roller bearing. Tom
Crotty says a ball bearing replacement is better because the ball bearings
will take up any slack in the thrust and keep the crankshaft from moving
back. I'll have to look up this replacement bearing Do you want the number of the replacement ball bearing for the rear main? The front main is A/B factory drawing A-1346 and is a double row ball type bearing: " #306 Gurney, or a #306 New Departure; or #5306 SKF or a #5306 Schubert"