a friend of mine recently acquired a 1982 pickup, and is planning on rebuilding the engine. the problem is, the truck has had an engine swap sometime in the past (to a 22r, apparently) i've never seen the truck or engine so i can't be sure... but we need to find the production date of the motor to figure out some of the parts needed for a rebuild, specifically main bearing sizes.
the code stamped in the block is 0435969
can anybody tell me how to decode this? is there a site out there that i'm not finding? thanks in advance for any help offered