Ported Edelbrock versus W2 out of the box !

PRH said

But, to bring it back on topic....... if all you’re looking to do is build a 408-422” stroker to make 575hp or less, i’ll take the “cheaper and easier to get parts for, closed chamber for good quench, doesnt need expensive offset rockers, uses normal headers” RPM heads.

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This is what I initially was responding to. You listed closed chamber feature as a benefit on the Edelbrock head. And it can be. I am simply saying that the feature is not always a benefit if it is restricting the overall performance of the head. I would not abandon a cast iron w2 because it is not closed chamber. And I am saying as was explained to me, that not all closed chamber designs perform the same as far as airflow potential because they are not cast with the same shape.