Top 10 7.3L Power Stroke Tech Articles
Drivetrain and other upgrades for trucks powered by Ford’s OG workhorse diesel engine.
As diesel-powered Ford pickups go, F-250 and F-350 rigs have been motivated by oil burners since as early as 1983, when a naturally aspirated, 6.9L, indirect-injection (IDI), International Navistar V-8 was offered as an optional powerplant. Those first diesels made a then-stout 170 hp and 305 lb-ft of torque, and put the F-Series in a completely new space with regard to towing and hauling capability.
Displacement for Ford's Navistar-built diesels was increased to 7.3L in 1988. Also IDI and not turbocharged, the big-bore powerplant tacked on 10 additional horsepower and 338 lb-ft of torque and also featured 1/2-inch bolts for improved head-to-block seal.
One more iteration of this engine followed, with performance bumped to 180 hp and 360 lb-ft. But things really took a turn in 1993, when a turbo, improved pistons, rings and pins, Inconel exhaust valves, bigger fuel injectors, better head gaskets, and a larger oil cooler were added to the IDI 7.3L. The boosted (8-psi) powerplant, a precursor to the highly revered 7.3L Power Stroke diesel, made all of 190 hp and 388 lb-ft of torque.
This abbreviated chronology closes with the introduction of the vaunted 7.3L Power Stroke turbodiesel engine, which came on the scene in 1994. Like its predecessors, the new V-8 was produced for Ford by Navistar, but that's where the similarities ended. In addition to Garrett turbos, Power Strokes featured forged connecting rods, a six-bolt-per-cylinder head-bolt design, and a direct-injection, hydraulic electronic unit injection (HEUI) fueling setup that supported the engine's class-leading 210 hp and 425 lb-ft of torque.
Through many years, Diesel Power staff and freelance contributors have produced a vast library of in-depth information about Power Stroke diesels. We've gathered this collection of notable reports on popular 7.3Ls for those of you who are fans of the engine and its technology. While it isn't an engine platform that's known for radical performance, the 7.3L has a long been regarded as one of the most reliable, hardest workers in Ford's Power Stroke engine group.