Hey I see Dodges' 5.7 has 345 horsepower at 5600 RPM and 365 foot pounds of torque at 4400 R's and there putting that in there heavy duty trucks.. Why in the world would you put a engine in a truck (like that) that's supposed to be for pulling heavy loads.

Jeez I don't think my 5.4L will even rev that high... I would think pulling your boat or camper up and down the hills in second gear at redline would be rather irritating and possibly hurt your fuel mileage (alot)....


What's up with that????

 

I guess that in their RUSH to market (this engine was to be ready for the new RAM intro LAST YEAR) They have not yet figured out how to tune it to get any decent power down low. This is the first power ratings I have seen for their Hemi, I kind of lost interest in Dodge when I got my FORD.

Your 5.4L is well able to rev that high, but without a chip your fuel cut-off will limit you to 5000 RPM.

 

They just want to say we offer the most hp in a gasoline engine.
Just like Chevy w/ the 8.1L, They want to have the biggest engine.
It's funny, The 6.8L V10 out pulled the 8.1L with a 10,000lb. trailer from 0-60 and 1/4 mile at WOT.

 

There are alot of people out there that will see the numbers and think "Wow" Many dont realise that they have to rev up that high to produce that. Thats why I love Ford, may not have the HP numbers that some do but they are where I need them. And the 5.4's 350# available down low where you can actually use it.

 

I say let the engine come out and wait 10 years... then we'll see how good that 345 hp is. 5600 rpm's all the time can't be good for wear on the engine. I want my torque down low and hp at a good mid number... like 3-4K that's a bit more reasonable.

-Flea

 

it may be 345@5600 peak but what is at at 3-4,000 rpm? might still be good at that rpm range.

 

Otterbob, almost all of the dyno graphs that I ever see show the horsepower and torque rising pretty linearly, especially for truck motors. So what I'm thinking is at 35 or 4 grand the numbers are definitely lower and to me 35 is still pretty high to listen to for hours on the freeway.

 

And the biggest joke is when it manages to find its way into the 1/2 ton Ram, it will only be available with an Auto (becaue of the torque) that will upshift before 5600 rpm.

 

"Dodge RAM, the S2000 of Truckville".

Ford's response: "Got torque?"

 

If the Ram is the mayor of Truckville, I would imagine that:

the Lightning is John Gotti.

Toyota is the bus driver
Nissan is the Quik-E-Mart clerk
Chevy is the city worker leaning on the shovel

oh I could go on forever...

 

i would imagine that the dodge makes between 315 to 330 in the 2500 r.p.m. range and if they offer it with a 3.73 or 4.10 it will pull comparable to a 5.4. also remember that this is the starting point for the dodge, the 5.4 started at 230 and 330 ft lbs. and in 2 years ford got 20 more ft lbs of torque.

 

We'll all have to see how things fall out when these things actually surface. Here's a snippit from the one of the original buzzwatch articals comparing the new hemi to the old 360. They were expecting 330/360 at the time...

Torque is really the true measure of an engine's power. When comparing the two engines torque curves the superiority of the 5.7 is clearly evident. The 5.9 puts out a maximum of 335 lb. ft of torque at 3200 rpm. The 5.7 on the other hand puts 325 lb. ft at 1500 rpm. It continues to go up from there eventually hitting its peak out put of 360 pound feet at 4000 rpm. Heck, at a mere 1000 rpm the 5.7 delivers more than 300 pound feet of torque! These numbers translate to an engine which has plenty of pulling power and great highway characteristics, in other words . . . it's the perfect truck engine.

Full info here...
http://www.car-truck.com/chryed/buzz/b102601.htm

 

That's right. The new Hemi makes almost 90% of its power (Hp & Trq.) below 2000 rpms. This engine could very well set the standard for all others to met. So lay off the Dodge fans!






2001 F-150 4x4 Off-Road
5.4 V8 auto.

 

I think the major selling point for the HEMI will be the name. Many people remember the HEMI from back in the day. Nothing could touch it. To be honest if they would drop that HEMI in the old style Dodge before they changed the 2002 style, i would have sucked it up. They are just on their way to trying to get the largest engine/power. Everyone does it. I am not so sure about that 5700 rpm number, that just doesnt sound right. I have read the numbers on it before somewhere, and that number didnt stick. All manufacturers dyno many engines and publish the best torque curves coupled with the best HP curves. The engine that produced the high torque curve wont produce that HP. If it was the same engine the curves would cross at 5252 rpm i think. Not sure on the HEMI numbers though, i do know the HP and torque numbers for the 5.9 and 5.2 when they came out were very modest.
Im not in the truck for racing though. If i wanted that, ill wait another year until Dodge puts the Viper V10 in the 1500 pickup with a 5 spd. Will be pricey, but i bet its a trip to drive.

 

the way a Hemispherical (HEMI) motor is designed they are high reving motors.....the difference is all inthe head. It will be an awsome motor hopefully........if it is as good as they say its gonna be im going to trade in my HD F150 for one.