I have a question about the block casting numbers and the numbers stamped into the deck surface. I realize this is the red-headed [censored] stepchild of the Mopar family, the slant six,but I was hoping somebody would know what it all means.

On the freeze plug side of the block it has 2806830-4 toward the front, with 1364: AAWJ near the center, and a large BH near the back.

On the deck surface it has a string of stamped numbers and letters that are really hard to read: 74W 198 9 4586

I got this engine for pretty cheap and it has supposedly been rebuilt not too many miles ago. When I took the oil pan off the distributor gear was chewed up in the bottom of the pan, but otherwise it looks good. I just need something to stuff between the frame rails of my D100, and since I already have the mounts, bellhousing, etc. I thought this might be the cheapest way to go. But before I order any parts I'd like to know what it is.