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In line with the IDI diesel, the Power Stroke was offered in three-quarter-ton and larger versions of the Ford F-Series and Econoline product ranges. The Power Stroke is an electronically controlled, direct injection engine with a 4.11 in × 4.18 in (104.4 mm × 106.2 mm) bore and stroke creating a displacement of 444 cu in (7.3 L).
The Navistar T444E is a diesel V8 engine manufactured by Navistar International Corporation. In its use in Ford Motor Company trucks, vans, and school buses, it is the first of the Power Stroke family of diesel engines. The T444E was manufactured from 1994 to 2003, replacing the 7.3L IDI V8 designed by International Harvester.
Introduced for the 1983 model year, the 6.9 L diesel was the first to be offered in Ford light-duty pickups, available in the F-250 HD and F-350. Although GM pickups already had offered a diesel engine in the C10 starting in 1978 (5.7 L Oldsmobile), and across the range in 1982 (6.2 L Detroit), those engines were intended for efficiency over power.
For the largest Super Duty trucks (F-550/600) and the medium-duty Ford F-650/750 trucks, the engine is de-tuned to 335 hp (250 kW) at 3,750 RPM, but with more torque, 468 lb⋅ft (635 N⋅m) at 3,750 RPM. [4] The E-Series offers two versions that were de-tuned even further. The "premium-rated" version generates 325 hp (242 kW) and 450 lb⋅ft ...
The International Harvester Company (IHC) has been building its own proprietary truck engines since the introduction of their first truck in 1907. International tended to use proprietary diesel engines. In the 1970s, IHC built the DVT 573 V-8 diesel of 240 and 260 hp (179 and 194 kW) but these were not highly regarded and relatively few were sold.
F-Super Duty models two-wheel-drive only, were rated at about 14,500 lb (6,577 kg) GVWR, and came with either the standard 7.5 L (460 CID) gasoline V8 or the optional 7.3 L (444 CID) diesel V8. Other mechanical upgrades from the dual-rear-wheel F-350 included four-wheel disc brakes, 10-lug wheels, and a monobeam leaf-sprung front axle.
2011–present Scorpion Diesel V8—"Power Stroke" OHV 6.7 L 32-valve DI turbo diesel (F-series only) 2020–present Godzilla V8 — Pushrod V8 7.3 L (445 cu in), gasoline, naturally aspirated, port fuel injected, variable timing, 16valve, 10.5:1 compression made for F-series Super Duty models.
At their launch, the F-650 and F-750 were available with the Caterpillar 3126 (replaced by the C7) 7.2L inline-six, the Cummins ISB 5.9L inline-six, and the Navistar-produced Ford-branded 7.3L Power Stroke V8 engine. The 6.0L Power Stroke replaced the aging (and no longer compliant with California noise regulations) 7.3L for the 2004 model year.