HEMI & CUMMINS
The all-new Hemi 5.7L V-8 makes 345 hp at 5600 rpm and 365 lb-ft of torque at 4400 rpm by using cross-flow aluminum heads, hemispherical (of course) combustion chambers, two sparkplugs per cylinder, and a fully balanced cast-iron crank with cross-bolt main bearing. Offering the strongest base (5.7L V-8) and optional (8.0L V-10) gas engines of the 3/4- and 1-ton big-three pickups, Dodge seems to have the power war won on paper.
On the diesel side of engine choices, the all-new 5.9L I-6 Cummins diesel uses a gear-driven and electronically controlled high-pressure common-rail injection system with pilot injection (the injection of a small amount of fuel that starts combustion before the main fuel charge is injected). Designed to help smooth out engine noise, produce cleaner combustion, and allow for easier (extreme) cold-weather starting, pilot injection makes for more precise tuning that results in higher horsepower and torque numbers.--M.W.