Forum Discussion
P_Kennedy
Aug 09, 2014Explorer
Absolutely nothing if you don't abuse the power train by shock loading the components. Rear end gear ratio has no effect on power available, higher numerical ratios allow the available torque to lift the load from a standing start. A rear axle ratio needs to be matched to the rpm at average cruise speed loaded in the gear you plan to travel in. The best rear ratio for a Cummins I6 will not be the same for a V8 diesel and each V8 gas engine will differ with displacement and torque rating. The higher the gear ratio the better the economy empty.
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