340 dog out of the hole/no low end torque??

You will have to put a degree wheel on the crankshaft. You will measure valve lift before and after tdc. The directions are in mopar book and on the degree wheel.Your cam specs say 106 centerline. Let's say your timiing gear had key marks in two degree increments. This is your you adjust cam centerline by moving the timing gear. So if you moved the timing gear the wrong way retard or advance and forgot to verify the cam again. You could be way off. This may or may not be the problem. But having the cam retarded in the motor would give you both symptoms you are describing.