Great Lakes 4x4. The largest offroad forum in the Midwest - View Single Post - Where is the cummins rpm sweet spot?
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Old January 31st, 2010, 11:12 PM   #13
give 'er sh*t ay?
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the engines are designed to run between 1200 and 1800. thats where the most power and torque come out of the cummins. when i was at the dealership thats what they recommended. dont lug the motor though, on the big motors it causes fretting of the block. never seen it on a "B" but it could happen
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