Thanks, man I hope it that simple! it would make my year!
You jetted up... did it pick up speed... if so, keep
jetting up.... it could be your springs, the hyd cam
springs dont like rpm much above 6000(too light to handle
the weight).... we had this same problem(my buddies ford
pick up) last week during the Hot Rod Drag Week, we
tightened the pre-load some and it helped a little.
Also you jetted the front 2 jet sizes and the rears
4 sizes... try going up the same amount on each
(if you were in the ball park)
