Class A with the Cummins 275HP engine?
Trying to find people that has this engine in there Class A's? I have the engine out of a 2000 model Class A. Its in a 2005 Chevy Kodiak C5500. We use it to put our 40ft 16,000 lbs 5th wheel. Trying ...
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Peak torque on your engine is probably in the range of 1,600 RPM. Pulling a load below that RPM is lugging the engine and not good for it. Have you tried downshifting manually when your RPM has dropped to 1,800 or 1,900 RPM and running in the 2,300 to 2,500 RPM range when pulling those hills? That is the general operating strategy I use with my 300 HP, 600 ft lb torque at 1,600 RPM Cummins ISB/5.9 powered coach. Works well for me, give it a try.
