I was curious about the horsepower your motor is putting out. My 493 inch sixpack motor has it's horsepower peak down at around 5500 rpm and runs out of cam at just past 6000 rpm, but it sure does run good at and below those numbers.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)