I have the original owner and shop manual for my 1987 laredo 4.2L, which means this engine was built 02/05/1988....the "8" indicating it was built in the year 1988, and since the jeep is an 87 I am assuming this is not the original engine; but what the heck is the additional number that is welded on top of the engine block code?? This was my grandpa's jeep, I know he was super frugal and often frequented the local junk yard..so possibly a salvage pull or warranty fix? It's like a treasure hunt trying to figure out what he did with this lol
