Originally posted by Diesel Boy
Why did you turn the PMX up three? Head to head stock to stock is a race. What might the outcome have been? Come on guys, what's competitive to compare racing with the Powerstroke and the Duramax when you run bombed verses stock. I would like to see two stock trucks tied to 10,000 lb trailers, drop the hammer and pull up a steep grade and see who gets to the top first. Now that's equal and fair competition. However, since the horsepower ratings are different maybe one (lesser horsepower)should start first as is done in drag racing. I make this statement because I saw the same type of lopsided brand bashing on the Ford site.
Having two 3500 trucks sitting in the driveway,, a D-Max and a Cummins. I can tell you right now that both of them hooked to a 25' Tandem axle dually(8 tires) Gooseneck trailer that stock to stock the D-max will win.
Observations of pulling with D-Max/Allison VS. Cummins 5-speed 3. 55 rear-end
The D-Max will pull hard all the way to 3,300 RPM (Redline)and still pulling,, the show is over at 3,200RPM on the Cummins.
When going up a hill if the RPM is kept above 2,700RPM the D-max can march right up anything. If the Cummins is kept above 2,500 RPM it's gonna maintain speed almost no matter what size hill. DIFFERENCE? The D-max can speed up big hills if you maintain WOT, Cummins maintains speed at WOT (4th gear on both trucks).
Our Cummins got 17MPG towing the same trailer the D-maz/Allison now pulls, but the D-MAx gets a solid 7MPG on hard runs, and 9-10MPG taking it very easy, and taking it easy means going to slow to make money when getting paid per mile.
My Dad Drives slower, than what my Grandpa thinks is slow (THAT'S SLOW) and he has gotten a peak of 14MPG in town. I get 12MPG in town.
My BOMBed Cummins (~375RWHP) gets 14MPG when I drive it "Like I want to" AKA "Like you stole it", "Your Gonna break it", "How do you keep tires on that thing?" and "Got any speeding tickets lately?" The D-max can barely keep up with my Friends 2001 Suburban, and my Cummins can outrun it at 3/4 throttle.
I haven't tried towing yet with my BOMBed truck, but I know for sure that the $1,000 in Performance parts and ~$800 clutch, It will tow anything faster than a D-Max could dream of, AND get better MPG.
I tried to sum up the difference's between the D-max and the Cummins, if anybody has anymore questions I'll try to answer them if I have experiance with the question asked. I won't be answering questions I don't know other than "I don't know" or "I feel such and such way"
MerrickNJr
P. S. One place where all the Chevy's have Dodge at, is their Brakes,, they are far superior to my Dodge's Drum/Disc setup. It's funny,, I can slide to a stop (all 6 wheels locked) and my Dad's truck can still stop faster without locking tires.
Attention: TDR Forum Junkies 
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. Doug
i'll see ya all at the next meet. 
