lewi7722 wrote:
Thanks for the responses. It appears most of the coaches I've been finding with the Cummins have the Cummins isb but that info it is not always initially available. It would be great to get the isl and not have to even think about it.
I wouldn't say you wouldn't "have to even think about it" with the ISL. That's what I have, and in SoCal, struggle on some of the long, steep grades. That's regardless of whether or not I'm towing.
Gross Vehicle on my '07 Itaska Horizon 40'' is 34K, Gross Combined is 44K. I heard someone say you should have 1 horsepower per 100 pounds of weight, so at 44K I should have 440 horsepower (and, more importantly, the corresponding torque). That sure seems right to me!
