427435 I absolutely disagree with your statement:
Again, it's not the torque but the hp (and enough gears) that actually move a MH uphill.
The reason you don't see gassers in bigger MH's is that the people with the money for a 40' MH are also willing to pay the money for an air-ride suspension system and to have the engine/transmission in the back (quieter).
first off air ride suspention has nothing to do with what we are discussing and as i alluded to earlier there just is not a gas engine avaialable that has the torque or durabilty to propel 40Ft+ 36k+ motorhomes down the road.
its been tryed before and failed miserable