I'm wondering what motor was used to make those dyno pulls for that dyno sheet,
I will bet money it wasn't a 318 C.I. Mopar Poly motor
I've dyno a bunch of different brand, sizes and types of motor. I've own a bunch of Mopar cars with different type and sizes of motors in them, I know what 440 HP feels like on the street and at the tracks.
Never believe what you hear and half of what you see is a old adage that I have found to be true in many instances
If it doesn't make since there is usually a reason for that