both of us felt that the cummins had not bad tq but not the tq that the max had down low, to be real honest it was not even a close comparision, the max just felt much more torkey than the cummins, with way less turbo lag, it was like comparing a gas to a diesel, maybe the cummins needed to be broken in first

the max felt like it would almost grab rubber off the start at low rpm as the cummins did not

we need a few others to compare the two, this was just the comparision of three guys on a slack afternoon

 

VG Turbo...'nuff said!

Put one on a Cummins, then watch out As the great Jerry Reed once said "Hold on to your <edit> Fred!"

But what do I know?
Chris

 

You gotta love this. A guy posts an honest comment about a Duramax and a Cummins, and of course all these die-hard Cummins fans come in and try to put down the Duramax completely. Funny how all the Cummins forums always have to put down the other diesel engines but it never happens the other way around. I mean a joke once and a while is fine, but it pisses me off when all I read is what's wrong with the other manufacturers and how good the Cummins is.

I never see this on other forums I visit. It shows me and a lot of other people how insecure most of you (not all of you) are about your trucks. Trust me, you'll get a lot more respect if you keep your mouths shut.

BTW cumminsdriver635, I believe Cummins has their smaller displacement motor tuned up a little more then the 6.6L Duramax to match its power output. Who cares which part of the RPM's it makes the power at. If anything it has the potential to make more power because it can rev higher. Combined with the proper torque convertor, it would make an excellent towing vehicle.

 

I dont believe the Cummins is turned up more at all. It is made to handle more abuse than the d-max or powerstroke. Thats just the way it is. Who cares which part of the power band the engine makes its power? Me. Which engine is going to last longer? The one turning 1600rpm's, or the one turning 2800rpm's? Which one will get better fuel economy? If I didnt care what part of the powerband the engine made power at, then I would be driving a Gasser. I never said the d-max was a piece of junk. I just said that is why i dont like ANY V-8 diesel, and that is the sole reason I drive the dodge/cummins. My truck pulls hard from 1200rpm's up with a load behind it. If you are happy with your duramax, then i am happy for you, because i am happy with mine. Like i said. Im glad people drive different stuff, and they clearly do it for different reasons. My truck has 188k miles on it with no major problems out of the motor, and i am a firm(and biased) believer in the cummins. I have some experience with both trucks. One uncle has a 04 CTD 6 speed, and the other has a 03 D-Max/allison. The D-max/allison will outrun the cummins taking off with a load of cattle, and the CTD will burn the D-Max from 30-60mph with a load. They all have their strong points. I am happy with what i drive, and if my thought's make you feel bad about what you drive, then it is not me who is insecure.

Eric

 

You need to open your eyes next time you are on a d-max, or powerstroke forum. Seems the D-Max guys have a pretty big head themselves. There will always be some competition, and everyone views things differently, so thats just how it is gonna be.

Eric

 

I have owned 1 duramax and 2 cummins. The one thing that I "hated" about the d-max is the ally. When I was pulling my 5er up a steep freeway grade. It down shifted 2 gears at once, sending the tach over red line. So to get the rpm's down alittle. I was going 50-55 mph. The cummins going up the same hill with same 5er hooked to it. Down shifted 1 time and the speed never dropped below 65. You guys can sit here and talk all the crap you want. The bottom line is the reason for the down shift of 2 gears at once is not enough torqh. You guys can love all those 6 speeds all you wan't. But the 4 speed in the dodge fits the cummins better than the 6 speed in the duramax for towing. Since I have owned and towed with both of them. I can honestly say the dodge "towes" best. Sure the ford or the d-max will out run it. But day in and day out the dodge out towes them. One other thing. It takes a while for these diesels to break in. So going and getting a brand new truck off the lot and hooking something behind it is not a fair way to make your desision on witch one to purchase. I would go through every forum I could find and read and ask as many questions as possible. Then try to make your mind up that way. Another thing that I did when I couldn't make up my mind witch one to buy, is to ask the people who own them what they like or dislike about them.

 

cumminsdriver635, I never said I own or drive a Duramax. I just feel a need to stick up for them, because of the few people that might go on here and see one of your posts and see only one side. If you've ever droven a Duramax, you would know they don't sit at 2800 rpm cruising down a highway. And I never said that you said that the Duramax was a peice of junk.

May be true, but not even close to the extend of this forum.

And also, I don't want you nor do I expect you to agree with me on any of this. But hopefully other people will see this and make up their own decisions.

 

i own an 03 ferd 6.0,an 03 dmax and an 05 dodge cummins,when you set the dodge and the dmax to any hp level you choose 375,400,450,500 no matter what the dmax has both power and tq lower longer and flatter than the cummins.i am not bashing dodge i like my dodge truck better than the max or the ford ,but bottom line proven by dyno the dmax makes more power down low

 

i have never heard or seen a Allison downshift 2 gears while pulling, i do not believe that statement for one second, and i bet you could not find a second person to back your statement

i have pulled many times against cummins in the mountains and and never seen the back bumpers of the dodges, usually it is not comparable... in tq at lower rpm

you throw a cheap 400 dollar 100hp tow tune on the max and pull 10k and your Allison for most part will not shift again... i have done this for over 300k without problems

your very biased one sided view is not correct in my eyes

 

You guys make me laugh---Buy what you want and drive it!!

 

I thought it was common knowledge that the Duramax would outrun the Cummins out of the box...

why is everyone arguing?

as for the ranting about people hot rodding diesels and how it used to be a bunch of RV owners? well... I'm a hot rodder... I got into diesels because I found out that you could drive around in a vehicle w/ some utility that makes over 500rwhp and still knock down over 20mpg on the highway. I do not pull an RV, I don't pull any trailers. so stay in the right lane and get out of my way!

the reason I prefer the Cummins is that as a hot rodder, I will not leave something factory stock... and the Cummins has proven to hold over a thousand horsepower... the other offerings WILL NOT hold the power...

if someone wants a "factory hot rod" and plan to get out of it under warranty, I often reccomend the Duramax!

but if they want a REAL hot rod that they want to rely on for hundreds of thousands of miles, I ALWAYS recomend the Cummins

 

very well said

 

DING...DING... ROUND 3 !!!!

Any Takers????

 

The reason for that is because the tranny can downshift 2 gears and still keep it in safe RPM's. If the 4 speed downshifted twice, the RPMs would would be way over the redline and could cause damage.

 

Why does this make it OK to downshift 2 gears?? It's causing wear and tear on the tranny, and decreasing engine life and fuel economy while revving at close to max RPM! I guess since it's "safe" then it perfectly fine to run this way for 300 miles?

BTW, I've put about 10K miles on my Uncle's 03 Duramax hauling farm machinery on a 32', 8500lb goosneck! The most it's ever downshifted on me is into 4th, but most of the time when hauling heavy or windy, it won't make it to 5th!

If you've never hauled farm machinery before, it's vnot aerodynamic at all, heavy, and plays heck on fuel mileage! With my truck, I average about 12mpg. The Duramax hauling the same loads will get about 7-8. My brother's 454 will get around 6!

Again, to each his own, I'm fine with my choice!
Chris