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.

Eight thousand, five hundred and twenty pounds—that's how much our big-as-it-can-get Ford F-350 dualie ... 6.7-liter turbo-diesel V-8. (The “weakest” F-350 is good for 3100 pounds of cargo ...