Casting code help

[ACS081783]

Well, I can't check the VIN. Problem is, I got the engine out of the truck and then the truck had a new engine put in and was sold. No idea where it went to. Not to mention that the engine I got out might have been a replacement for the original itself. There is the F1023TTK code on the block behind the distributor. 348675 lower down on the block, which is what leads me to believe it was a replacement engine, as the truck was a late 60s model, and that particular code was for engines made from 73-76, at least from what I gathered searching around. Further back on the block on the same side is "CON 2 I174". On the back of the block where the transmission would bolt up is "4 57 J 73" just like that. Again, any info would be much appreciated