Hello everyone, I am French and I ask for your help. I have an oldsmobile engine whose origins I do not know. I'm trying to find out what vehicle he was in. I need to know that to order parts. I have noted numbers:

395558 2 on the front of the engine.
33M313223 engraved on the front block.

If you could help me that would be great.
Greetings

 

395558 2 = 1968 - 1976 Oldsmobile 350 c.i. engine

The 33M313223 number, is this a typing error? Could it be 73Mxxxxxx? If so, that would make it a 1973 model year engine.