Ok here's something for your perusal;
My alloy-headed 367 has had 3 cams in it since 1999. At .050 they were: 249, 223, and 230 now. The only things that I changed between those combos, was the Scr, and the Q, to keep the Dcr at about 9.0, and the pressure to, in the range of 180 to 185psi...