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I’m rebuilding a 67 327, cast# 3892657, I think it’s the A.I.R system, has a hole in the back of the block that connects to hoses and smog pump. Does an aftermarket intake cover this hole? It has a 2 bbl and I don’t plan on reusing it. Or do you block it off with something. I’ve done some 350s but I don’t recall seeing this stuff until now. Advice would be welcomed.
Thanks and have a blessed day.
Thanks and have a blessed day.