Dizzy recurve for 440 MH input

It just seems to make a lot of noise with no real pull . I understand it’s heavy but not any different than a truck with a trailer behind it . I had a 74 W100 with a 440 and it would haul a car trailer with far more vigor than this thing. I assumed that Ma Mopar had destined it for emissions and killed the torque . When you add in the fact that most of our uphill climbs out here are around 5k-8k ft in elevation it makes for a real dog !

What year model is it? Does it have cats on it?