08-05-2017, 02:38 PM
Horsepower is measured at higher RPM's and torque is the low-end “grunt” or low RPM pulling power of an engine. Diesel engines only make around 300-400HP in those big rigs, but they make anywhere from 1,500 - 2,000 Ft. Lbs of torque, which is what pulls the 80,000 Lbs of payload in a fully loaded big rig.
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