F450 vs Ram 3500 DRW tow vehicle
So the wife and I are moving to the full time RV lifestyle. We just purchased a 42' toy hauler this weekend, with a GVWR of 20K#. Now I'm looking at a tow vehicles. I'm considering either purchasing a...
Forum Discussion
4x4ord wrote:
You don't want to be lugging an engine but the closer you are to running it at peak available power the better fuel economy it will achieve. So if an RV requires 175 HP to cruise down the highway, then running the new Powerstroke at 1600rpm (55% load) makes more sense than running it at 2000 rpm (46% load). I just did a quick search and came up with this
article that explains the point I am trying to get across:
Yeah, on one engine. Every engine is tuned/designed differently with different cam profile, turbo efficiencies, max fuel pressure, injector events, and so on. The cam itself plays a huge role at not only when the engine makes peak torque/power, but also its peak efficiency. I can show you another engine chart as the one above on a different Cummins engine and its fuel consumption rate would be completely different spots because it was tuned/design for a completely different purpose.
