The 7.3L Power Stroke V8 is a turbocharged diesel engine that was developed jointly by Ford and International Truck and Engine Corporation as the replacement for the older 7.3L IDI V8 engine. The Power Stroke name is derived from its high power output in relation to its displacement. The 7.3L Powerstroke V8 made its debut in the 1999 model year Ford Super Duty trucks and E-Series vans, and remained in production until 2003, when it was replaced by the 6.0L Powerstroke V8.
In stock form, the 7.3L Powerstroke V8 produces 250 horsepower at 2,800 rpm and 500 lb-ft of torque at 1,600 rpm. However, with aftermarket tuning and modifications, it is not uncommon for this engine to produce significantly more power. For example, one modified 7.3L Powerstroke engine dynoed at over 1,000 horsepower!