2015 Winnebago Forza 34T, 340 HP enough?
Hi, we recently ordered a 2015 Winnebago Forza 34T (actual length is 35'6"), and it has the Cummins ISB 340 hp, 660 lbs torque with the Alison 2100 series six-speed transmission. It is due to arr...
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My experience is the isb is as fast as the isl up hill when no one is around, which makes sense as the weight/hp ratio are similar. The isl does better if you get stuck behind a slow truck the isl accelerates around and back up to speed quicker. I have been happy with both engines.
