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Low range reverse is prone to splitting the transfer case. Shift to high range prior to backing or plan to replace the t case.

Caution is warranted when turning up the fuel. Doing so means the engine is no longer idiot-proof. It becomes easy to melt the pistons, most especially on long steep hills with a load.

Not at all. It doesn't have quite the same power either. The 8.3 actually makes a bit more torque and a bit less horsepower. Thing is, it makes its power later in the rpm range. My experience is the 8.3 will hold speed better if you hit a hill already at speed, but taking off on a hill or...