Cummins, Duramax, Powerstoke?

[gmtech954]

well i worked on fire trucks for a few years and would def stay away from the cumaparts. but gotta love those driptroits. they all leak but they dont die and produce some serious power. the cats arent bad but i still like detroit.


as far as light duty diesels the powerchoke is allright if you can keep a tranny behind it and could keep it from leaking fuel. The cumaparts work well and have been tried and trued but its still a cumapart. The dmax allison combo works well now that the injector issue is fixed. also by the eng specs i bet youll see it going twin turbo in the next year or two.


all said and done beef up your frame and suspension and drop in a good ole driptroit 8v92 w/ a 13 spd

 

[1967k10]

If you're talking twins on a D-Max in the next year or two,they are already out and hauling a$$. I have been thinking about getting one myself but haven't decided if it's worth $3500+ to kill high end sports cars live Vipers and ZO6's. I'm already killing Mustangs.

 

[rusty75k5]

A cumapart?
Are you serious?

The 5.9 is probably the best engine ever built, no problems like the 6.0. The duramax isn't a bad engine, but any diesel that is a V-8 sucks. I dare you to find an OTR truck that has a V-8, you won't. I-6 is the way to go. Every brand has failures and lemons, but the cummins has been around in pickups for 17 years. The only weak link is the transmission.

Hey man, it's an honest mistake.

 

[rjfguitar]

A cumapart?
Are you serious?

I would completely agree, the 5.9 Cummins is the least "cumapart" prone engine found in a car or pickup period.

But....since he mentioned detroit and cat...his experience probably comes more from the larger older CUmmins in the bigger trucks. Back before the electronic days, Cummins motors didn't hold up much better than the other brands. But really, they all came apart after getting them hot or after so many miles regardless of brand.

I may be wrong, but I bet that is where he is getting "cumapart" from, not necessarely from the 5.9 in the Ram.

 

[pitbulls'n'blazers]

I dare you to find an OTR truck that has a V-8, you won't.

I know a guy that drove a big ol' GMC that had a DD V-8, and he said it pulled like crazy! He also drove it over the road for years,haulin' over 60,000lbs of cable,and it would pass up the the I-6's!! But I also know that a 3406 or C-15 Cat would probably do the best in a OTR truck. But as for a light truck you can't beat the Cummins!!

 

[gmtech954]

v8 otr detroit 8v92 v8 otr diesel

 

[Leadfoot]

A cumapart?
Are you serious?

The 5.9 is probably the best engine ever built, no problems like the 6.0. The duramax isn't a bad engine, but any diesel that is a V-8 sucks. I dare you to find an OTR truck that has a V-8, you won't. I-6 is the way to go. Every brand has failures and lemons, but the cummins has been around in pickups for 17 years. The only weak link is the transmission.

Hey man, it's an honest mistake.

Cummin's is go good motor no doubt about it, but after having driven in all the big three 06 offerings the V8 diesel in the GM wins hands down. I almost didn't buy it due to truck pricing (I could have gotten a comparably equipped Dodge with Cummins) for less, but in the end I thought it was worth it (Motor, 6 speed auto trans, ride quality, and fit and finish). I think the 6.6 has more even grunt than the 5.9, but more cubes helps too. In other boards we are seeing the stock dmax's putting out much more than the stock Cummins can. Even allowing the Cummins to mount a comparably equipped turbo. The 6.6 and it's infamous aluminum heads are standing up to more HP/TQ than the Cummins.

Now if you ask me what LD truck motor has PROVEN to put out more HP/TQ it is a highly modified 12 V that can't be driven on the street FWIW. I think in time though the 6.6 will pass it as parts and machining become readily available.

Only time will tell, so now it is just speculation.

 

[rjfguitar]

The extra .7Litre does nearly nothing for the Duramax. The only reason you found the '06 model to be the strongest is because GM is currently at the front with the most aggressive ECM programming. People make way more fuss out of stock power than it really is. It's a power war, currently GM jumped out with the LBZ motor, next year Dodge or Ford will trump them with just a few more ponies. Who cares anyway, I can get a simple adjustable black box stacked on top my "measly" 235HP '01 Ram and blow the doors off any '06 model from any of the big three. When it's that easy to make power who cares what stock is.

 

[89GMCSuburban]

but any diesel that is a V-8 sucks. I dare you to find an OTR truck that has a V-8, you won't.

They don't make them anymore, but for years there were V8 Cats and Detroits. And in actuality, they were quite popular. Mileage is what got to them...not to mention, I6 motors are the most inherently balanced engine design. Look into some buses that were made not too long ago...there's still buses here that have 2 stroke Detroits in them.

 

[1-tonmudder]

I am currently running a 97 F-350 2wd 4 door with a 7.3 power stroke,and it has 311k on it.Was previousily owned by a roofing co and has mostly interstate miles.It has had minimal maint done to it(oil change's,batterys,2 alt's since Ive had it,a cam shaft sensor,a glow plug relay,and two vacumn pumps)while some may argue that this is a lot most of those parts were made by somebody besides International. The power stroke wasnt my first choice but I got the truck for 3K so I didnt think I could go wrong.I know a guy that is the main diesel tech at the local Ford dealership and he said they had replaced alot of the new 6.0 diesel motors.if I were to buy the one I wanted it would be the Duramax with the Allison,I have looked at them a few times but I cant justify giving 47k for a truck that I will be hauling greasy cases and axles in.

 

[rusty75k5]

O.K. Thanks for the correction on the V-8 trucks, I guess I havent been around long enough to know them. For 06, the GM has 350/650 and a 6 spd auto. The cummins will have a new motor in 07, on Cummins website it lists it at 325/750. I think the hp will be higher and tq lower, but not by much. It'll get a 6 spd too, the 4 wont cut it anymore. I think Ford better be real careful with their 6.4 TT, that could be disaster. We can compare dyno numbers all day, but its all about what the truck does. The Cummins torque comes on way down low, so it might not win a race with the other guys, but it has incredible low end torque.

BTW, we have an 03 cummins, a 97 7.4 suburban, and a 96 tahoe, both Vortec. The dodge crushes both put together in torque, there is no comparison.

 

[rjfguitar]

I am currently running a 97 F-350 2wd 4 door with a 7.3 power stroke,and it has 311k on it.Was previousily owned by a roofing co and has mostly interstate miles.It has had minimal maint done to it(oil change's,batterys,2 alt's since Ive had it,a cam shaft sensor,a glow plug relay,and two vacumn pumps)while some may argue that this is a lot most of those parts were made by somebody besides International.

I wouldn't argue that thats a lot of stuff. My grandpa has the same truck as you (his is a '95) and has right at 310K on it. Original altenator, original auto trans (besides a defective converter that was covered under warranty). 310K on an auto that had a rep for being weak....

He has lost two vaccuum pumps, some bushings on the front suspension (his is a 4wd with TTB) a torque converter at 70K that was defective), a couple of sensors, a brake master cylinder, and some minor power window work. I'd say thats not much for a 11 year old truck with 300+K and still going.

Those older early Powerstroke Fords are darned good trucks.

 

[89GMCSuburban]

The cummins will have a new motor in 07, on Cummins website it lists it at 325/750.

I just saw the site, and I found those specs listed under medium-duty ISB. Technically, the ISB and the Dodge 5.9 are not the exact same motor in a few small areas, mainly programming. I wouldn't expect to see those exact numbers...they may even be higher since I've always seen lower horsepower but higher torque ratings for the ISB in the medium-duty area than the Dodge area.

 

[DEMON44]

Couple things to add.


The Cummins-DiamlerChrysler contract expires in '07. And you can be damn sure it won't be renewed. DC will put Mercedes in the Rams. Just like the Jeep Liberty option, and the new/fugly Dodge delivery vans.


A 3116 Cat has power ratings availiable up to 300hp 732ftlb with stock programing, it's production run ended in 2000. The 3126E can get you 330hp 860ftlb, production run ended 2003.

 

[rusty75k5]

Couple things to add.


The Cummins-DiamlerChrysler contract expires in '07. And you can be damn sure it won't be renewed. DC will put Mercedes in the Rams. Just like the Jeep Liberty option, and the new/fugly Dodge delivery vans.

What about this 6.7 Cummins we've been hearin about for the past few months? It's a bored 5.9, makes perfect sense to throw in the rams.

 

[rjfguitar]

What about this 6.7 Cummins we've been hearin about for the past few months? It's a bored 5.9, makes perfect sense to throw in the rams.

It's stroked, not bored.

 

[rjfguitar]

Couple things to add.


The Cummins-DiamlerChrysler contract expires in '07. And you can be damn sure it won't be renewed. DC will put Mercedes in the Rams. Just like the Jeep Liberty option, and the new/fugly Dodge delivery vans.

I call bull, There is talk of a new 6.7 Cummins for '07 models and Cummins is what put Dodge trucks on the map. I don't think they would be dumb enough to trade off what sells their pickups, for the most part, but big companies have done dumber things before.

I think the Liberty has nothing to do with the Rams. People that buy Liberties would be confused enough trying to figure out which button to push for diesel at the pump, much less care what brand is under the hood. Guys interested in a Ram Cummins is a VERY different story....

 

[DEMON44]

I call bull, There is talk of a new 6.7 Cummins for '07 models and Cummins is what put Dodge trucks on the map. I don't think they would be dumb enough to trade off what sells their pickups, for the most part, but big companies have done dumber things before.

I think the Liberty has nothing to do with the Rams. People that buy Liberties would be confused enough trying to figure out which button to push for diesel at the pump, much less care what brand is under the hood. Guys interested in a Ram Cummins is a VERY different story....

I dunno. I know their contract expires '07, I haven't heard any talk of DC renewing. Would seem to make economic sense to put the Mercs in seeing as they own it. But I guess it wouldn't make sence if its going to hurt sales.

 

[uberbeans]

Without a doubt, the diesel in my VW Jetta TDI is the best. It gets 50 mpg on the highway. Put that in a K-5!

 

[smalltruckbigcid]

Couple things to add.


The Cummins-DiamlerChrysler contract expires in '07. And you can be damn sure it won't be renewed. DC will put Mercedes in the Rams. Just like the Jeep Liberty option, and the new/fugly Dodge delivery vans.

snip.....
I've wondered about that too. DC has been pretty aggressive in placing their motors in the OTR segment, and working very hard on brand recognition for the M-B engines. But everyone knows about the big 3's financial shape, losing money faster than drunken sailors. So if Ford has to put cash up to bring the cummins over to their platform, I don't believe it will happen. DC corporate has been very clear in the heavy truck segment that they will not play second string to any other engine manufacturer, that attitude cost them all new engine sales to Paccar acouple of years ago. (Paccar is the parent company to both Peterbilt and Kenworth)
The keynote will be what Navistar does to keep Ford as a client of International engine mfg. If they kiss Fords butt in a major way ($$$) then I think Ford will stay the way they are. Personally I don't think Navistar has a choice, as they stand to lose the 2nd largest customer that International engine mfg has, if they lose Ford.
George