...However I have found a little useful info which agrees with your post TMM. From an article by Paul Pitcher on how to port LA heads: "For any open chamber head, the chamber volume is reduced about 0.2cc for every 0.001" planed off the deck surface of the head. If more than 0.010" is removed from the deck surface, then the intake surface will need to be milled to allow the intake manifold to fit. Mill 0.0095" from each intake surface for every 0.010" milled from the deck surface of each head."
