Cranking ( dynamic) compression pressure is way too low for that cam. Should be in the 180psi range. Not likely your C.R.is 11.26:1. This would explain poor vacuum and soft bottom end while still having a decent speed - 106mph. The slugs are probably .015 - .020" down in the holes. BTW, most reputable cam Mfg's will give you a suggested dynamic compression pressure for a particular cam. It is much more important than the static number - but much less impressive