Max torque at 5600 seems a fair bit high to me with Eddie heads and 4 inch crank, in fact about 400-500 rpm higher than I would suspect, at least.
I dont care what that dyno said, it isn't right.

69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17