Three engines are available for the 2008 Ford Super Duty lineup. The first is a 5.4-liter, 24-valve V8 with variable-valve timing that pushes 300 horses at 5,000 rpm and 365 lb.-ft. of torque at 3,750 rpm. A standard six-speed manual transmission delivers the goods to the rear or all four wheels. Positioned in the middle of the pack is a 6.8-liter, 30-valve V10 that puts out 362 horsepower at 4,750 rpm and 457 lb.-ft. of twist at 3,250 rpm. A five-speed TorqShift automatic transmission is standard. That tranny is also connected to the top dog, a 6.4-liter, 32-valve Power Stroke Diesel V8 offering 350 horsepower at 3,000 rpm and 650 lb.-ft. of torque at only 2,000 rpm.