Quote:
Originally Posted by patrickt
There have been reports of NOS service blocks with no casting dates by the oil filter adapter, like this thread: 332-428 Ford FE Engine Forum: 427 cross bolt main spacers -- I have never seen one with my own eyes, but I have seen a good number of "goofy, and I didn't know those even existed" blocks that it wouldn't surprise me in the least. |
From what I understand, the casting month and year should be next to the
oil adapter. If there is no casting number the block is said to be a service block. What is a service block?