Panic,
Thanks for your prompt reply. All that you said is true. However, I believe I over-simplified my problem. My head has been extensively milled. Unfortunately, it was milled incorrectly. Apparently, the deck surface was not level when milled, resulting in combustion chambers that get progressively smaller as you go from no.1 to no.6! The intake valve seats do not appear to be recessed, indeed, the edge of the no.6 valve rises above the deck of the head! Only the thickness of the head gasket (.053 compressed) and the deck height of the flat top pistons (.080 down in the bore) prevent piston/valve contact.
As it is now, my pushrods are too long, and I don't seem to be able to find a set of shims for the rocker stands that will work. I'm hoping that I can progressively shim the rocker stands to get the rocker shaft parallel to the block deck again, and work from there. I think I can arrive at the correct amount the head was milled if I can find out the original volume and the amount of decrease per amount milled.
