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
wnjj wrote:ShinerBock wrote:
Actually the article I posted stated exactly have been saying the about how horsepower levels vary depending on the application the engine will be used and and they are not decreased for longevity reasons.
If not for longevity, what possible reason is there to suggest a lower HP for a truck that is working in the mountains?
Cost would be the only reason to spec a lower hp truck. If it will bused one the highway or for heavy loads, then a higher horsepower is recommended but you will have to pay more for the driveline to support that added power and GVWR/GCWR. Similar to how you have to pay more for the Aisin if you want the 400 hp/ 1,000 lb-ft Cummins and the 30k tow rating.
However, it if it used in low speed urban applications in the mountains then a lower hp may be acceptable if you are wanting to cut down on upfront cost, but it may lead to increased wear if you go too low and the engine has to work hard all the time.
Essentially, the only negative for going too high for the application is up front cost, and the negative for going too low for an application is longevity.
"Matching the right hp and torque ratings to your application. How do you choose among hp and torque options? An underspec’d engine presents performance and potential premature maintenance issues. If you over-spec, you pay a much higher cost per unit without a corresponding return on investment. How do you strike the right balance?"
All About Medium-Duty Work Truck Engines
