Can someone please tell me how to tell the year of a 5.0 block. Also I have 2 roller blocks and would like to know what the XXX on one, and the YYY on the other, stand for that are in the lifter valley. Thank you.
The block with the YYY has a fuel pump excentric- (sp) on the front so I really dont know what its out of... There are a few other minor differences, it looks like maybe a different mold, its a roller block tho... Thanks for the replies.
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