... Some additional information: tires are 285 Nitto NT555, kick-down cable was disconnected from the throttle body, overdrive was turned off and the pulls were made in third gear.
No-one picking up on the bold-text?
I say there's a great possibility the transmission was slipping also.
I thought it was well-known fact one never disconnects the Throttle Pressure linkage on a Mopar transmission, unless you have a modified valvebody.