Cummins power
The class A's that I am like have the Cummins engine. I notice that the larger/heavier rigs have more horsepower (300hp vs. 340 to 360hp)with the 6.7 L engine (same torque). How do they get the extra ...
Forum Discussion
john&bet wrote:My 1994 motorhome's 5.9 Cummins diesel 6BT (1989 to 98) is the same as the one that is used in the Dodge pickups during those years. It is governed at 2500 rpm. The Cummins 5.9 24 valve ISB (1998 to 2007), which was used in both motorhomes and Dodge pickups, is governed at 2900 rpm. The Cummins 6.7 ISB (2007 to present) engine is governed anywhere between 2800 to 3013 rpm depending on year. It is used in both motorhomes and pickups.ScottG wrote:The 5.9 they are talking about used in MH are tuned different than your or my pick-ups. They are tuned more like mdt engines and turn slower, say governed about 2500 rpm vs 3200 rpm in pick-ups thus different hp.wny_pat wrote:keepingthelightson wrote:Try 230 to 250 HP!
I think the 300 HP is the 5.9L (older version). The others are the 6.7L
Actually the 5.9 was sold with ratings up to 325+ HP - mines a 305.
