Big Block Cylinder Heads "915 vs 906"

Paul, my understand has been that essentially, they are the same head, port wise. One an open chamber version and the other closed. Of course, I could be totally off base, but I believe that's right.

Also, the 915 I think would have another advantage besides compression alone. It has the ability to create quench, whereas the 906 does not. I am like you though. I would like to see a comparison of stock VS stock......but also ported VS ported, and on a zero deck height engine with flat tops.