Small block heads with no casting numbers

318willrun said

Generally speaking..... though.... some consider the ones with the emission ports in the exhaust the "smog" head. That is how they reference it. Kind of like "no mopar came with a posi", but generally speaking it's a reference. So I was generally speaking of the "smog port" heads can be made to work.

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I know, but the ports and chambers are almost identical across the board. It's also a fact Chrysler went to the open chamber for emissions reasons.....just like most everybody else. I'm not sayin they're bad heads. Quite the contrary. They're probably about the best small block open chamber heads there are.