Mack / Cummins? - Steel Soldiers::Military Vehicles Supersite

M215 · 05-15-2007, 21:50

Hello SS,
It is time to trade up the M35A2 to a 5 ton, but which one? Currently we are using the deuce to hall the dozer around and clearly need more truck. I have ruled out a 5 tonner with the LDS465 but I'm not sure about the Mack or Cummins.
The Mack ENDT-673 is rated @ 211 hp / 610 lbs-ft torque.
The Cummins NHC250 is rated @ 240 hp / 685 lbs-ft torque.

I have been told that the Mack will out pull the Cummins and since the Mack has a turbo you can easily turn up the fuel rate.

Anyone have any personal experience with these trucks to offer a comparison?

Thanks, Karl

CCATLETT1984 · 05-15-2007, 21:54

wait for AMGeneral to chime in on this topic.

timntrucks · 05-15-2007, 22:07

i am running a cummins and i think it is underpowered for me. i think the turbo is the way to go Tim

DaveP · 05-15-2007, 22:17

I have a cummins in a XM818WW. We just turned the fuel pressure up to 220#. it was at 195#. made a noticeable difference. pyro is going in this weekend and muffler is going into storage then we will probably go some more on the fuel.

TacticalTruck · 05-15-2007, 22:20

hey karl
i love my mack tractor. i wouldn't trade it for a M818 but i suppose you could turbo a 250 and bring it up to 300. AMGeneral had a Mack that needed some work at a real fair price. The Mack have come down some in price with the availability of Cummins trucks for the commerical guys. The Mack parts are a bit more.
Jeff

CGarbee · 05-16-2007, 07:43

Everyone that I have ever talked to that has driven both the Mack and Cummins powered trucks has said that the Macks would walk all over the Cummins powered rigs... The consensus was that Mack was a bit more conservative on the published hp/torque ratings...

On one hand, I'd like to have a Mack powered cargo truck. On the other hand, I've got a baby Cummins in one of my M37's, have just purchased a five ton dump with the Cummins, and having a cargo truck with the Cummins would be a better fit (commonality of parts, etc.).

As has been said, it's a tad easier to snag Cummins parts off the shelf since they are newer, but getting parts for either rig isn't that big a deal...

When I get the M817 home, I'm planning on driving it up to Syria, VA, to the farm on occaision (I've driven all my toys up, it's a great place to play/work them...). You can always ride over and check it out to see how well she runs...

My final thought: get whichever one comes up for sale in your area that is price/condition compatable with your needs, and don't sweat too much about what is under the hood...

m139h2otruck · 05-16-2007, 16:27

I would be curious where the hp/torque #'s came from, as the manual I have shows lower numbers, sort of mid-way between the Cummins and the Multi (5 ton version).

AMGeneral · 05-16-2007, 20:40

If you can find a Mack powered cargo or tractor,GET IT!!!!!!!I've kicked myself a hundred times for selling mine.But I will have another.

maddawg308 · 05-16-2007, 20:46

Brandon, I thought that M123 of yours had a Mack engine. Or is that a CONDEC or LeRoi?

derby · 05-16-2007, 21:46

No presonal experiance with the Mack,but I have also heard they are fuel misers.There is a guy north of me who has a Mack powerd cargo,last I knew he wanted $7500.