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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).
This engine features numerous improvements over the 6.9, with most of the changes located in the heads; the block received an increased bore and select-fit pistons, while the heads received an enlarged prechamber, enlarged valve stem shields, harder valves, and other minor upgrades. The front cover was revised to reduce seepage.
For 1993, a turbocharger became available on the 7.3L "IDI" diesel. In the middle of the 1994 model year (referred to as "1994.5"), International replaced the IDI with the new 7.3L T444E turbo diesel, the first engine branded as a Ford Power Stroke. While sharing its predecessor's displacement, the engine was an entirely new design.
The sole gasoline engine was the 6.8L V10, while the 7.3L Power Stroke was the diesel option; in mid-2003, this was replaced by the 6.0L Power Stroke. For 2005, the F-450 and F-550 received further updates to the exterior than the rest of the Super Duty line, with an extended front bumper and front fenders; the F-550 received a "wide-track ...
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.
On 350-series vans, a 7.5L V8 and 7.3L Navistar diesel V8 were also optional; the diesel became turbocharged in 1993. For 1995, the IDI diesel was replaced by a 7.3L Ford Power Stroke diesel V8 (also sourced from Navistar). For 1997, the E-Series underwent a revision of its engine lineup, retaining only the 7.3L diesel.
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