IH stamp on 318 block

Interesting.

And to add a little bit to the subject just before I got to legal driving age in the early 80s my dad had a 76 charger. I don't think that it really needed it but he was hell bent on getting rid of the 360 in that car. He went to the junkyard and found a 40k miles pull out from a 77 Le baron. That went into the charger. Along with the 2 bbl intake, carb, and distributor out of the original 360. That Le baron engine had the same casting mark, in 2 or 3 different locations. On the back under the flex plate, and on 1 side of the block.