40' Newmar 400HP vs 370HP Cummins
Getting close to deciding on a 40' Newmar Kountry Star, Dutch Star or a little older Montain Aire years 2003-2008 (within our budget). The question is: some have 370HP and some have 400HP cummins. I...
Forum Discussion
wolfe10 wrote:
I suspect BOTH are the 8.9 liter ISL engine. It could be had in either 370 or 400 HP and with exhaust brake or engine compression brake.
Indeed they are the same engine, the 8.9 ISL. The 400 HP has been reprogrammed to produce more power, but both are still rated at 1200 ft-lb torque.
A friend with the same model coach as mine had Cummins reprogram his 370 to 400. He could perceive no change in performance.
