Engine Block Identification

Ranger302

New Member
Feb 14, 2017
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Hi all,

I recently picked up a bare block from a 1991 5.0 and in the lifter valley it's stamped with a triple X on one side and a double X on the other. I was told by the person I picked it up from that he was unsure what it was other than he thought it was a stronger block, any help or direction would be appreciated!
 
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