Is 360 hp enough for for 38-40 ft class A
Looking at going to a DP from a 5th wheel. A lot of units have 360-380 hp. Is that enough? Especially if pulling a toad or a trailer. thanks pointrow
Forum Discussion
azdryheat wrote:
It's not the HP that gets a MH over the mountains, it's the torque. And these motorhomes have some incredible torque.
For example, the Cummins ISB6.7 has 200-360 hp and 520-800 LB/FT torque (same size engine (6.7L) you find in Dodge Ram pickups). The ISC8.3 has 380 HP and 1050 LB/FT of torque, 8.3L. Bump it up to the next level and the ISL9 has 400-450 HP and 1250 LB/FT of torque. The king of Cummins motorhome engines is the ISX15 with 600 hp and 1950 LB/FT torque. These are the current specs from Cummins website.
It also depends on which model of a brand one gets. For example, the Tiffin Phaeton 40' comes with the ISC engine, while the higher level Tiffin Allegro Bus 40' has the beefier ISL engine. Same length, different engines.
If it were me, I would be checking the torque rating for any motorhome I was looking at. I would hate to think I was buying an ISC engine when it was actually an ISB.
Quite true, HP is only part of the question. Cu inches and torque play key roles.
