once again that has to be the worst mileage i have ever heard of for the max, i have had better milage pulling 25k in a head wind, to bad you did not have a tow tune with you

we can get better milage with our kenworth supper-bee towing 65 tons

 

Well, the DMAX may have better numbers, but at what cost? Again, seems GM get a $5-$10k premium for equal value. And is it equal, since the Cummins is a know long term anvil of a motor and the Isuzu is still unknown; however, seemingly better than the 6 oh, uh-oh; but then so is my lawn mower.
This thread proves tha it takes ALL KINDS to fill up the freeway.
As long ay you are happy with what you buy, what differrence does it make what others think?
For those who want to squander money on fuel and mods, it is a free world, just be safe.
My final $.03, maunual tranny's outlats slush boxes(Invented by the Devil). They never melt with heat & Torque and you don't have to mod the $$$ out of them to deal with most mods. You also can contol what gear you want when, not have some computer do that. Let's not forget the Jac brake, which has not been an auto option until now.They work esepcially well pulling heavy loads, whether you are young or old. If you just want to drag, go fast, be lazy, get the auto.
And as the song goes, "You got your problems, I've got mine........"

 

No Kidding!! Our T-800 can do about the same

What was the 25K?? That's a cakewalk for me! Most of my stuff is 30K, about 10ft wide and 12-13' tall! It's all framing, or a loader bucket on the neck, it all catches wind no matter how it is.

Ever hear how a building construction crew is most worried about a building "blowing over" when it's just a frame?? That's what farm equipment is, just a frame. There's nothing to make the wind glide around it like a TT, or a load of hay. Really sucks sometimes, literally!!

just fyi!
Chris

 

Its programmed to shift down as many gears as it can before the RPM's are dangerous. Your asking it to accelerate and thats what its giving you. Theres no more wear and tear on the tranny then before. In fact it's easier on it when its accelerating on a lower gear.

But if its stuck on 4th gear pushing 3200 rpms for 300 miles then theres a problem with the truck or you need to slow down.

 

For all of you wondering witch trans is the best and can hold the most pony's in stock form. Call up Bullydog and ask them witch trans will hold up best before needing upgrades when they dino there downloaders and chips. I am sure all you allison lovers will be suprised.

 

i really just cant even imagine why a board of cummins owners wouldnt think a duramax is not better. ..........fred,why not go to the democratic convention ,and try to tell everybody there how W is the best president ever?.......ggeeesssshhhhhhh...................... ...bama

 

I would hope the dmax is faster. otherwise they are full of it. chevy's were quite a bit more money last time I checked as well. cheap to make power on a diesel. by my math though 360hp 650lbs > 325hp 610lbs so it should be a bit faster if you care. unless they have come down in price, the grampa ride height and extra cost is not worth the marginal power difference. if power were the only issue why would anybody have bough a dmax when the the dodge had more power. there is more to consider when buying.

I just felt the cummins was more reliable than the powerstroke or durmax so that sold me. I also still think the doge looks better but that is all personal preferance. IT is so much cheaper to lift a dodge as well. these were my motivations for the dodge not power level.

I though all of three, chevy, ford, and dodge had pretty nice power. I think it is hard to arguge you are going to get more miles out of a ford or chevy though.

I am not going to knock the chevy too much though. who knows if they were cheaper to lift I may have looked harder. It was hard to rationlize spending more money on something that was more expensive to modify. IF you want something stock height though they drive nice.

 

Since I am biased towards Cummins, I had to look up some dyno charts to see if the Duramax has the same or better low end torque. Here are my results-

Superchips Duramax lb7- http://www.superchips.com/prod_imgs/makepdf-507.pdf

Superchips Duramax lly- http://www.superchips.com/prod_imgs/makepdf-506.pdf

Superchips Cummins 98-02 24 valve- http://www.superchips.com/prod_imgs/makepdf-453.pdf

Hmm, doesn't look like the Duramax has even close to the same low end torque, but I could be wrong. FWIW, I know several people that love their Duramax trucks. They do ride better than the Dodge's, and, depending on who you talk to, they have a better interior. But, until I see a dyno chart of a Duramax with more torque than a Cummins below 2500 rpm, I will continue to believe that the Cummins has more low end torque.

 

this is from a superflow dyno of a stock Lbz right from the dealer, and this is too the tires, not off the engine like your pictures show...

your numbers also seam low for the max, stock lb7 makes around the 240 to 250hp and around the 440 to 460tq to the wheels... the lly is around the 250 to 265hp and 460 to 480 to the wheels

you can see how much more tq than the cummins

 

The maximum torque is right around 1800rpm in that graph. The CTD's torque comes on lower than that. This is the best graph I could find right now:

http://www.tstproducts.com/index.asp...WPROD&ProdID=4

You can clearly see it come's on strong way down low, and goes straight across. BTW. My dads bone stock muffler and all 98 made 537lb ft. The New LBZ didnt do much better.

Eric

 

i think if they would of started dynoing at a lower rpm the tq would of been right their as well

 

and here is the cummins tq curve

 

Well fred w, talk to all of us when, and IF your truck reaches anywhere near 225,000+ kms, without going thru a few sets of injectors, or without blowing a head gasket or 2, or a turbo, or go into limp mode for the 97th time, or whatever else lets loose, you get the drift. BTW mine already HAS gone this far without ANY of these issues, and with majority of it towing also, and get better mileage than any duramaxipad can do. I don't know who you're trying to fool with all your bs, but it's not working on me.

Maybe you haven't been exposed to FIXING any of the brands of trucks like some of us have(or know the weaknesses of them). You couldn't PAY me to own, or drive either one of the others, let alone work on them(open the hood and you'll see what I mean).

If you're trying to brag up the duramaxipad to us here, maybe you should go to the gm site and try to convince them first . To each his own, I'm just glad I drive a DODGE with the CUMMINS, nuff said. BTW Moderator, Isn't there a TROLL law around here?

 

Cumminsdriver, I believe you were told that the '98 made 537 ft/lb but I think the dyno was off quite a bit. The '98 models were Rated at 440 ft/lb. I can't see them underrating them by almost 100 ft/lb AT THE WHEELS????
As far as the downshifting, a friend of mine that I go to the races with had a 2001 Dmax/Alli and pulling his camper on any hill that thing would drop 2 gears and SCREAM to the top of the hill. He traded it to a 6 speed Dmax just for this reason. I'm another one of those people that think you should never put an auto behind a diesel in a truck you are actually going to use. As far a milage towing he got 8 mpg pulling a 7000lb enclosed trailer. There is a big difference pulling something on a flat bed compared to a box trailer. I get 10.5 to 11 mpg pulling 32000lbs of trees on a flatbed GN. I got 10 mpg pulling a 8000lb enclosed trailer. Wind resistence makes a big difference.

 

i am on the verge of 300k right now, by march i will be there, i have been running over 500-600hp over the last 2 years to the wheels, i pull all the time, i do not detune when pulling as for problems to date

bent a rod about 6 months ago at the track when adding WI at a higher rate than i should have, hade injectors replaced at 100k under warrenty, replace a ujoint 2 months ago, and right now it just went in for a broken flesplate...

thats it for that hp, no other injector, turbo, head, tranny, rearend problems