The Triton 5.4-liter engine is a Ford V8 single-overhead cam design used in several Ford vehicles since 1997, most notably the Ford F-150 pickup truck. It has been produced in two- and three-valve-per-cylinder versions and was an engine option on the F-150 from 1997 until 2010.
The Triton V8 is a part of Ford's modular family of engines that have been used in vehicles ranging from the F-150 pickup to the Shelby Cobra GT500 sports car. Though these engines are used in a number of Ford's vehicles, the name does not refer to the ability to install the engine in multiple cars but to the modular production process used to manufacture these motors. The Triton name was first used to refer to the two-valve-per-cylinder version that debuted in the F-150 in 1997, though subsequent evolutions of the 5.4-liter engine have also been called Triton as well.
The original Triton produced 260 horsepower and 350 foot-pounds of torque in the 1997 F-150. A supercharged version used in the Ford F-150 SVT Lightning performance truck produced 380 horsepower and 450 foot-pounds of torque. Ford introduced the three-valve version of the engine to the American market in 2004. The 2004 Triton produced 300 horsepower and 365 foot-pounds of torque. Its output was later boosted to 320 horsepower and 390 foot-pounds of torque in the 2009 and 2010 versions.