And here are some of the near stock results.



<B style="mso-bidi-font-weight: normal">The first short section of the hill is a mild 2%, which quickly rises to 6% for the remainder of the pull. This year, all trucks launched from a dead stop with an 11,920-lb trailer, and ran full-pedal from the 4-mile marker to the 5-mile marker - exactly one mile[/B]
<B style="mso-bidi-font-weight: normal"> [/B]

<B style="mso-bidi-font-weight: normal">Completely stock 2004.5 Chevy LLY Duramax/Allison with just 3,700 miles[/B] showing on the odometer. The crew cab longbox reached 53-mph in 1-minute and 17-seconds. The LLY's maximum exhaust temperature eventually topped out at 1400°. this truck achieved the highest speed among all those running at stock power levels.

2000 Ford 7.3L Powerstroke to compete. Rising to the challenge with a set of performance injectors and power chip, his big Ford achieved 66-mph in 1-minute and 6 seconds.

<B style="mso-bidi-font-weight: normal">2004.5 Dodge Cummins 600/Auto with just 2,900[/B] miles showing on the odometer. Other than a trick dual-exhaust and an AFE air intake kit, his truck ran stock, achieving 49-mph in 1 minute and 22 seconds. The new Cummins produced an exhaust temperature max of 1400° during the final portion of the pull.



<B style="mso-bidi-font-weight: normal">This was our first opportunity to run a 6.0L on the hill[/B] and we were looking forward to seeing what it had to offer. This truck was equipped with a trick sounding dual-exhaust and an AFE air intake kit, and we ran it at stock power and with a variety of Edge Juice power levels. This truck produced the lowest exhaust temperatures of all those equipped with gauges and somewhat similar power enhancements, and produced the lowest elapsed time (among the stock trucks). He completed the run with a Stock truck at 51-mph in 1 minute 14 seconds.[B]<FONT size

Interesting how the 600 Cummins couldn't carry comparable speeds at the end of the pull, curious how that truck doesn't live up to the claims from the dodge boys.

GM and Ford have a much better transmision. Try it with sticks the results might be different, that would be the only way to actually prove which motor is stronger. The Dodge auto is decent it's just not in the same league as the other two.

That big heavy C4500 with an LB7 sure did well.

GM and Ford have a much better transmision. Try it with sticks the results might be different, that would be the only way to actually prove which motor is stronger. The Dodge auto is decent it's just not in the same league as the other two. That wouldn't prove as much as doing it this way. How could you find 3 different drivers that could shift exactly the same on 2 different type 6 speed transmission? And using the same driver on all 3 trucks for the pull wouldn't work because there are the 2 different transmissions. The way it was done, is the most accurate.

Not only that but most don't really care what the advertised numbers are but rather what you can put to the ground. Towing performance is what it is all about.

Yes indeed, we all knew that extra Allison gear makes a difference when accelerating a load on an incline.

Actually this test proves nothing but who has the most powerfull truck at the event, not much else as none of the trucks were stock and the exact confguration of each is unknown.


If you think I am saying this because I have a Dodge, well, I will sight a recent test done in this months Motor Trend in which the Dodge came in last place. I think it is more accurate as the trucks were all basically the same and method of testing. They took three trucks all diesel, all 4X4s, all autos, all with with 3.73s, the Dodge was a quad cab, the Ford and GMC were crew cabs, all short beds. The Ford was the heaviest, the Dodge 300 pounds less and the GMC 400 pounds less than the Dodge. They tested them by running up a 1% and 3% grade at 55MPH towing a 8500lb boat, then they floored it and measured the forward G force, the Dodge and GMC were close on both, the Ford however beat them both on the 1% by a slight margin on the 3% pull by 100%, twice the forward G force. This to me was a better test, TCs were locked at that speed it was all motor.

To me I really don't care. I like my Dmax- if it's not the best- so be it. It fit's me and my lifestyle. Plus I am just a Chevy dude. Never owned anything else. I think they are all pretty cool trucks and I am really not looking for a race when I am pulling my stuff- LOL

Actually this test proves nothing but who has the most powerfull truck at the event, not much else as none of the trucks were stock and the exact confguration of each is unknown.


Actually, the LLY is reported to be stock and the 600 Cummins is reported to be stock with some exhaust and intake mods, which adds little to nothing in the seat of the pants department.


And the results don't support the most hp truck either as the Dodge is stock with 325hp and the LLY w/310hp, whereas, the Dodge fell well behind.

I heavily agree with you azmike. I'm not a racer either, but it's always interesting to see and discuss results from these real life comparisons.

If you think I am saying this because I have a Dodge, well, I will sight a recent test done in this months Motor Trend in which the Dodge came in last place. I think it is more accurate as the trucks were all basically the same and method of testing. They took three trucks all diesel, all 4X4s, all autos, all with with 3.73s, the Dodge was a quad cab, the Ford and GMC were crew cabs, all short beds. The Ford was the heaviest, the Dodge 300 pounds less and the GMC 400 pounds less than the Dodge. They tested them by running up a 1% and 3% grade at 55MPH towing a 8500lb boat, then they floored it and measured the forward G force, the Dodge and GMC were close on both, the Ford however beat them both on the 1% by a slight margin on the 3% pull by 100%, twice the forward G force. This to me was a better test, TCs were locked at that speed it was all motor.





I didn't get to read that test, but if I understand your description of that test (running start up a hill), it doesn't evaluate how well the tranny and motor work together and I think that is where the Dmax/Allison shines. As for the 6.0L 2*G force, that may be the result of GM scaling back HP in 5th gear.

Ray,


First off the Dodge in the picture had aftermarket wheels and tires on it, how big where they? what gears did the trucks have? who know? It could have had 3.73s and running 35" rubber now it has 3.50s The test proved who had the fasterest most powerfull truck, hands down GM, I am in no way disputing that, my point is just it's not a good test to compare stock to stock and come away saying GM has the most powerful truck. The GM may still beat the Dodge and the Ford but that test could not show which stock truck has the most power to the road. The Motor Trend test, the GM and Dodge were very close, if the GM was being held back then so be it, they might as well rate it at the power it has when being held back as 1st and 5th are where you need it most, off the line and on the highway. Sadly the Ford beat them, stock the Ford has more grunt out on the highway, it was a cool test, real world stuff rarely seen in car rags.

Don't know what kind of torque converter stall the new Dodges have, but the older ones were all wrong from the factory. A simple change to a correctly matched converter in the Dodge can knock your socks off. The 47RE and 48RE transmissions are holding their own pretty well after being massaged.


mike

Both the new 5.9L and 6.6L have 590 and 600 ft. lb. torque at 1600 rpm. The GM truck is lighter by 200#-500# depending on configurations. This leads me to believe that the GM with its better transmission should win in most situations. That does not make the Dodge a bad truck by any means.


How many of you guys run your truck at full throttle while towing a 12,000# trailer? And up a 6% grade to boot! I know I don't, nor would I ever do it.


If someone beats me up a 6% grade by 5 seconds per mile, so be it!http://www.dieselplace.com/forum/smileys/Broken Heart.gif I'll just catch and pass them on fill upshttp://www.dieselplace.com/forum/smileys/Big Smile.gif


The only reason I posted this was too show you all that the Articles written about how much faster Ford is the either the GM and Dodge, when in reality, they are all very close.

How many of you guys run your truck t full throttle while towing a 12,000# trailer? And up a 6% grade to boot!


I do. That's why I bought a diesel, and why I've kept it stock. It'll run flat out from here to next year without a hickup. Never even gets hot. When towing I run 68 MPH or the speed limit + 5, whichever is lower. If it takes 100% power to do that then that's what I use. The more I do this the better the truck runs.


I learned this habit running school busses with Cummins ISBs and ISCs (that's 5.9s and 8.3s for those who don't speak Cummins) and IH DT-466s. Unlike gassers turbo diesels like to be worked at their design fuel rate and rated speed (that's flat out, right next to the governor). Nobody ever blew up, or even wore out, a stock medium duty diesel by working it too hard. (I only added "medium duty" after I thought about the 6.5 . . . in stock form the 94-96 6.5TD can be overheated severely . . .to the point of failure . . .by running it hard.)


Even when bombed (which means a whole different thing with D-maxes than with Cummins) the D-max seems to live for work . . . just ask Tomac.


I wouldn't treat most gasses that way unless somebody else had paid for it . . .but I think the 8.1L is pretty lightly stressed and you probably couldn't hurt it either.