Ram HD 1000 lb-ft MPG loop
Towing 29k. Nice to see they have a gauge that tells you how "full" the DPF is now. That's handy.... VIDEO Almost 9mpg pulling 29k, which means about 37,000 GCW. Pretty incredible. Interesti...
Forum Discussion
Cummins12V98 wrote:
You guys have fun. Tired of looking for topic related info.
Actually, the 400 hp/1,000 lb-ft 6.7L Cummins has a lot to do with what we are talking about.
Roy is saying the reason for the various power levels is due to longevity. He thinks that the higher the power level the less longevity meaning that the 400hp/1,000lb-ft Cummins will not last as long as the 200 hp medium duty version or even the 370 hp/850 lb-ft version with the 68RFE.
I on the other hand am saying that the reason for the different power levels in the 6.7L is due to emissions of each class/configuration, spec'ing the engine for each application, and cost ( i.e. having to upgrade the drivetrain to for each power level similar to how you have to pay more for the Aisin to get 400hp/1,000lb-ft). From my experience in seeing these engines tested at Cummins, there was no significant difference in the longevity of each stock power level or even higher than stock power levels(to a point) if correctly spec'ed for the application, and longevity is was more effected by duty cycle, maintenance, and how many cold starts per miles driven. The internals were shown handle well over these power levels day in and day out without any significant or noticeable reducing in their longevity.
