ID'ing Olds rear end

I tried a search because I thought someone did this a long time ago. Could someone help me ID this early 60's Olds rear end? One reads 616744(I'm pretty sure) and the other F225 and big number 5. Thanks guys.

 

Lots to chew on here.
http://www.jalopyjournal.com/forum/showthread.php?t=129676

and here.
http://www.jalopyjournal.com/forum/showthread.php?t=38805

and maybe here.

http://www.jalopyjournal.com/forum/showthread.php?t=150591


Now show us yours...

 

Call Brad @ Fabcraft in Texas 800-208-8242, knows part numbers has new parts to rebuild,etc. Great guy.

40 Mel

 

Thanks, I'll follow that up. I'm still wondering if those center section casting numbers would give me any info to what I have.