440 Intake for Full Race?? - Our Lil Red Express

something is not adding up to me. maybe someone can help. 6k throught the traps on a .690lift cam sounds low. Specialy with a 4.56 and 29in tire. Post the durration @50... Whats the MPH in the traps? 110-115? If your combo dynoed at 6200 Max HP than your trap should be at or above that.
Its not apples to apples but i have a roller .690 static in my 500 and with about the same heads and i have no issue with shifting at 6500+ and it pulls through the traps at 7100 with the same gear and taller tire. That on a single plane with 1050 dom. I know my car is lighter but I think that 4.56 gear and 29 tire should be netting a higher trap RPM.

The cc of the head should be around 74-77.