Engine ID help!!

Sorry guys if you already have went over this before, but I typed in the only numbers i found on the engine. I have found i think the casting # E7TE so I take it to mean that its a 1987 truck engine, but i dont know what type of truck so i dont know if its flat tappet or roller. I did my best to research this before posting but oh well. I was thinking about a 331 rebuild. I'm open to all questions and comments.




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