The all-new 6.7-liter Cummins High-Output Turbo Diesel is rated at 430 horsepower and 1,075 lb.-ft. of torque. A redesigned block and head, robust heavy-duty pistons, new performance intake manifold, ...

Cummins 14.3L Ace engine is one of the most powerful engines out there, powering U.S. tanks. That said, its unique design may surprise you.