I need help identifying a block. It is said to be a 400 pulled out of a 78 3/4 ton truck. But when I ran casting numbers it said 350. It is a 4 bolt.
BLOCK #:
3956618
ENGINE VIN #:
V0425WI

It would be great if you could tell me what motor this is. I beleive it is a 400 but i may be wrong.