Greg, My new 400 build has 9.94 to 1 compression, the 2801 cam, stock exhaust manifolds, 2.5" exhaust system, Q-jet carb on the stock iron intake.
It's a fresh build and still breaking in (maybe 10 miles on the engine since it was installed a few weeks ago). The heads are 1970 small valve #16's.
Timing is 12 degrees initial; 36 degrees total (by 3000 rpm) and has a 10 degree vacuum advance cannister for 46 degrees total for cruise.
Vacuum at 800 rpm idle (no vacuum advance) was 15.5 - 16.0 inches and we expect it to go up a couple pounds with more miles as it breaks in. The running temperature was 180 - 190 degrees on an 85 degree day.
Cylinder pressure was consistent at 175 in each cylinder. The cam was installed straight up (I don't recall the intake centerline).
Dennis
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