360 Date Coding

On the block, look at the front of the block just under the drivers front cylinder (#1) right near the deck. Theres a host of numbers there, those are the numbers you want.

On the cylinder head, the cast in letter is all you need really. Otherwise, under the head, look for the casting numbers were the two intake runners meet. Those are the numbers your looking for. The cast in "360" that can be seen up top means nothing and it really doesn't mean there 360 heads because it sez 360 cast into it.