[Raw Dodge]

The 5.7 Hemi isnt a bad pulling engine,my neighbor has a 2500 Ram with one,its on Cummins but it pulls his 31ft TT fine.If your going to tow heavy with a small block gasser,your going to need to be in the 3-4000rpm rangle on hills,thats just the way it is,all the new engines will take it fine.
Dmace,your comment on the GM 5.3 is way off,my brothers got 255K on his 2001 1500 4x4 ,and tows all the time,also play races it constantly,it runs to 6000RPM due to his aftermarket tune,it runs like a new engine yet,has over 8800 hrs on it.Hes pulled my 14K dump trailer with it,and pulls an 18ft enclosed across the northeast to bike shows with a good load in it.That trucks been rock solid,and dependable.