I found my Cranking Cylinder Pressure (CCP) problem

my old 340 was close on specs had 190 cyl pressure , it would ping going up a steep hill in 2nd gear once the revs were up it was fine it would not run well on 91 octane . needed 94 . building a 340 now with the same specs as yours except using trickflow heads not that they will make much of a difference