I inherited an Oliver Super 55 diesel from my Dad. I'm having it rebuilt. The crankshaft had to be reground. I need a source for 20 over main bearings. The part numbers are Federal 903m-20 and Cle (don't know what that abbreviation is) MS405P 20. The machinist said that if all I can get are 30 over he can redo the crank. Apparently bearings are hard to find now.
Any help would be appreciated.