Maybe I should have been more specefic he stayed up with me and I beat him by ten feet or so but my point was that I didnt just leave him in the dust so big whoop if I outrun him by ten feet. Yes we both had 20 inch wheels and crew cabs also btw.

 

The Hemi shines from 60 mph on up. From a stand still I would have to give it to the 4.7. I owned both. My cousin has the 5.7 with the 3.92 gearing and I had the 4.7 with 3.55 gearing and from a stand still I always seemed to get the jump on him, but from 60 mph he would pull away slowly. I just think the 4.7 is a well built less noisy motor.

 

Let me see, the Gen 4 Hemi has been out less then 2 years and you have owned two Gen 4 trucks in that time frame? So, you had a 2009 with either engine, then somehow, you decided to get another one but this time with a different engine? And on top of that you were able to make empirical comparisons. Did you run some controlled test with one and then the other?

Call me a skeptic, but I've seen too many posters on this Gen 4 site that claim to know all about the new trucks, and it turns out they never have owned one.

 

I usually don't explain my self but I will for you. In June of last year I purchased a brand new quad cab with the 4.7. Within the first few days I had a Magnaflo exhaust installed. The power was good off the start and it had a linear type torque curve. It seemed fast enough. Two months later I had a complete brake system failure (twice)(no brakes at all) while driving. Originally they bled the system and told me it's fine but by the next morning I had no brakes again. Turned out to be the master cyclinder. I just had a new born and had lost faith in the reliability of that truck. Now we are in the end of August of 09 and I was going to purchase an F150 but they would not give me what I wanted for my trade. I went back to the Dodge dealership and purchased the exact same truck with about 5,000 more in options and the Hemi. Original truck was 34,200 the new truck was 39,600. I took a 5,000 bath with my trade in. A month after I had purchased my truck my cousin sold his 2000 dated Chevy and purchased a 2009 Ram with the 3.92's. We did not go to the drag strip but from a stand still the 4.7 seemed fatser off the start. On the highway I would floor it and he would slowly pass me. Now I have the Hemi and I think it's a bit of a dog on the low end compared to the 4.7 but up high it shines. This is my opinion, it doesn't take science to just step on the gas pedal. I did't drive my cousions truck with the 3.92's so I could not tell the difference the gears would make off the line. But if you think your going to blow away the 4.7 by 20 car lenghths you're in for a surprise.

 

Renos,
Thanks, I was not trying to slam you. I appreciate you taking the time to clarify. I think in the long run, other readers of this thread will benefit by the exchange. I do have a couple of observations.

The torque curves are about identical for both engines - see one of my previous posts.

If you don't have the exact truck with the exact gear ratios, it is hard to compare. The 3.92 make the whole difference in off the line performance.

Basically, the laws of physics apply here. Two trucks with the same weight, same gear ratio are going to accelerate at the rates dictated by the force propelling them. In this case, the Hemi will win every time at all stages of the competition.

I don't drag race my truck, I have my vette for fun, even then, racing is too dangerous - get into an accident and hurt someone and you are into some serious trouble.

 

If you dont drag race your truck every now and then, how would you have any input on this subject

 

If you notice, the title of the thread is "Towing with 1500 4.7". Besides I didn't buy my truck with the Hemi to drag race, although I do take advantage of the power I have.

Just because I don't race my truck does not mean I don't know what I am talking about. I just disagree with people who "just know" the 4.7 is stronger then the hemi, because "it feels that way".

If you can't accept facts and don't understand the way things work, then perhaps, it is you who has nothing valuable to contribute to the subject.

 

Man dude settle down we are not saying the hemi is not a stronger engine it is, but it wont just blow past the 4.7. Try it and see. Im glad I got the 5.7 because I tow a lot, which is why I looked at this thread in the first place

 

You are right, I need to settle down. My apologies to anyone I may have offended or insulted. This is supposed to be fun.

 

We should all just be thankful that we drive such great trucks to begin with.