Stupid question but where do you add motor oil to your truck? Since you have the early valve cover with no oil fill, and the later block that deleted the big filler neck.
I wonder if the engine number was ground off at some point. Or maybe it was a replacement casting. I think there are other differences between the 2.25 and 2.5 blocks, something about additional webbing in the casting visible from outside.
Originally Posted by NC Rover
Nope...no numbers where you had pictured. See two pictures below...