Ten-percent more power and a solid whump of additional torque from the Power Stroke diesel mean ... heavy-duty or, in Ford parlance, Super Duty light trucks, the F-250, F-350, and F-450.

The Ford F-350 King Ranch is a Texas-sized freight engine capable of both, but if pushed, this diesel-powered luxury bunkhouse chooses work over play. So, read on to make sure you fully understand the ...