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Looks like a cast crank to me...



DING DING DING ... WINNER ...

I didn't even notice that, OP I hope you really did SCORE that one cheap because you didn't get what you thought you got, cast crank, cheap replacement timing chain, I'd be willing to wager the pistons are late model low compression slugs .150-.175 in the hole .

If it we me I'd be pulling a head to see what is in there instead of waiting to hear from the shop that built that.