5600 rpm stutter
I tried to find a cam similar to yours on Comp CamQuest. It would seem your missing about 50 HP. That cam produced 411 hp @ 5500 and 438 lbs of torque @ 4500 rpms. The cam is XR284H, 2300-6500 rpm range, lift .507/.510, duration advertised 284/296* Now on those dyno reading if they were an avg hp and torque these are similar 232/283.