If you just want a stock truck then the 6.7 would be fine....I think?
But if you want MORE POWER!!! than stick with the 5.9...
The EPA has killed the diesel...My 2 cents.

the new ones Ford/Dodge you can nolonger look under the hood and see a motor!!! just EPA stuff.NOW THATS SCARY!!!

I would like a 08 as well but now AM HEREING THEY WILL BE V8's..so my question is


why make a new motor for only a few years??? then goto a V motor?

 

Uneducated folks as usual getting all worked up over nothing. The new V Motors are for the 1/2 ton trucks so they can get better fuel mileage. No testing, that's funny also.

 

They have been testing the cummins V8 and V6 in the 1500 and durango
since 2000 or 2001 just search it on google.

 

I just did a 300 mile trip from Denver to Grand Junction via I-70, running empty, bone stock truck, got 18.1 mpg. Keep in mind that route goes up over the Eisenhower Tunnel (11,112 ft) and Vail Pass (10,666 ft). I set the cruise on 70 mph and the truck never down shifted out of OD the entire way!

Coming back the reverse of that route, I pulled a 9,000 lb trailer. Went up both passes with my foot to the floor doing 65-70 mph the entire way. Engine temp never moved from normal and I only heard the engine fan kick on once. Mileage was 9.5 mpg. Coming down those passes was something else! I'm dead serious now, pulling that trailer on these long 6%-7% downgrades, I never had to touch the foot brakes once. The EB with the new 6 speed auto senses you want to keep slowing down and will keep downshifting the tranny until you hit about 20 mph and the convertor kicks out.

I would say this stock 6.7L with 6 speed auto has about the same amount of pulling power as my Ford 6.0 had with minor power upgrades (except the CTD doesn't leave me stranded on the side of the road). To date, the only problem I've had with the truck was getting a few squeaks fixed. I'm real happy with mine so far.

 

MtnTrucker is right I returned from Yellowstone through I70 with my 11K 5th wheel and never used the brakes in the mountain pass. I drove 4000 miles in 2.5 weeks and didn't have one problem with the truck. My 6.7 has been great and I love the new trans and E-brake.

 

Here's the good news, you will love either one!!!!

Go down to your favorite dealer or dealers, see what they have, drive a few around town, and then decide.

I love my '05 with a 5.9 and would buy another. I'd also buy a 6.7 especially for the 68rfe and exhaust brake.

You gotta take 'em for a drive and buy what you really like. Man, if my wife would let me, I'd go down today and drive a bunch of 'em, what a hoot.

 

Old habits are hard to change. As an owner of a few Cummins powered RAMS and now a 6.7l with 33k "working" miles on the clock, I have experienced a few of the minor sensor glitches and now an EGR problem. With the 6.7l I now have to consider NOT using any diesel fuel addititives which I've religiously used in both my 99' & 04.5. Doing this for the first 33k miles with the 6.7l has apparently "gummed" up the EGR valve/pipe. Now I'm faced with using no additives and trusting that the ULSD that I'm buying will not kill off any fuel related components, or at least if it did, it would happen within the warranty period. I was looking for some better fuel mileage as I approached the 30k mile mark, after loosening up a bit, but this EGR problem interferred with that. I have not been on a trip since the EGR system was cleaned. So the next 30k miles or will tell if I was the culprit of the EGR failure or not. If it turns out that the additives did in fact gum up the EGR, was that Cummins' fault or Dodge's?? NO.
Given the chance to do it over again, I would definitely go for the 6.7l AGAIN as it has been said before by those who own & drive them, the 6.7l/68re/e-brake combination is light years ahead of the 5.9/48re in power and towing capability. If you will note in my sig. I had 330k miles worth of seat time in the 04.5 with about 75% of those miles towing something.

 

From what MtnTrucker and others have posted, I'm getting the idea the 6.7's get about 2 mpg than the 5.9's?

 

GMScott, I have a 2006 3500 with 30000 miles (I know its not the 6.7l) and have been running ULSD for 20000 of them with no additives. It's also used to pull a 43ft goose neck trailer with no problems. If you remember the 5.9 was not going to run good on ULSD and we were going to damage it. Also remember that the 6.7 was made to run with it.

I think that the ULSD scare was a bunch of baloney!

 

If you want the BEST, DEPENDABLE truck, buy the 5.9L and put a VB and a TC in the tranny(if you need the auto). A 5.9L w/ a decent 48RE will out pull, race, out whatever a 6.7L. No, wait a minute, the 6.7L will win you more dealer visits for repairs and service!

 

4700mi. Happy as a Pig in (poop)......

 

i have a new 6.7 with a manual tranny and 2200 miles runs great no problems with dpf,i am having problems with a 2262 code,i am having more problems getting the dealer to look at truck.i do keep rpm's above 2,000 maybe that helps dpf.

 

hey billindenver if DC tested this truck they only tested this engine on the highway, during the summer, with all of the problems people are having it seems to be the ones that actually work the "truck" and I mean work by driving to the work site and idle the engine, and drive around site. just like a farmer or oil field worker would do. Not everyone who buys these trucks tow trailers on the highway, and If people think they have problems now just wait until winter I forsee alot more problems with colder engine and exhaust temps.

 

Fine for the folks who live near/in town.

I'm in the back country 150 miles to town. I don't have the time nor want the expense of driving back and forth to dealerships beta testing a 6.7 requiring software flashes, code resets, cat exchanges what have you.

I posted earlier these trucks are too expensive to put up with glitches that force you to make repeated dealership visits. Especially, when they don't know how to fix it, first time last time. I've unfortunately been in that territory before.

I'm keeping my 06' until the reworked motor is completely lined out. While I was planning on buying an 08', I think I'll wait for the 09s' unless the 08's' are proven credibly reliable.