Originally posted by jramshu
You need casting numbers, those look like vin numbers. You can tell with them if it is the original block for that truck by looking at the end of the vin.


With the link given, I located the code on the back of the block(3970010). It says it's 307, 327, or 350. I'm mad now cuz I was lied to, & it's not a 400 . I would still like to find out what year & vehicle it came out of. Thanks for the help so far!