Originally Posted by snrusnak
Personally having driven my 4.7 and a few 4th gen hemi's (a couple express's and an RT) I really notice no difference at all between the two until you get into like 3/4 pedal to WOT.
I actually recently took my truck to the dealer and did a drive along and the mechanic asked me what I had done to my hemi and I said it was a 4.7 with tune and converter and he was shocked. We were driving normally though, you can tell it's no hemi at WOT.
I expect a 4.7 and a 5.7hemi to feel pretty much the same if you are just riding along with a light foot. Both have to use the same amount of HP to both cruise at say, 40 mph. The difference being - Is the power there when you want/need it?
Gearing has a huge impact also.. you can compare hemi vs non hemi all day but if the hemi you are looking at also has 4.10 gears.. its going to pull alot stronger off the red light.