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Chrysler developed its first experimental hemi engine for the Republic P-47 Thunderbolt fighter aircraft. The XIV-2220 was an inverted V16 rated at 2,500 hp (1,860 kW). The P-47 was already in production with a Pratt & Whitney radial engine when the XIV-2220 flew successfully in trials in 1945 as a possible upgrade, but the war was winding down and it did not go into production.
The 5.7 L HEMI engine for 2005-2008 has slightly less horsepower than those found in the Dodge Ram or the Dodge Charger (330 vs 345) due to different engine control unit (ECU) programming. The 5.7 L HEMI engine for 2009 and up was upgraded with Variable Cam Timing (VCT) adding 27 hp (20 kW; 27 PS) and 14 lb⋅ft (19 N⋅m) of torque.
Chrysler's Multi-Displacement System (MDS) is an automobile engine variable displacement technology. It debuted in 2005 on the 5.7 L modern Hemi V8.Like Mercedes-Benz's Active Cylinder Control, General Motors' Active Fuel Management, and Honda's Variable Cylinder Management, it deactivates four of the V8's cylinders when the throttle is closed or at steady speeds.
The optional engine, available on all non-PHEV Grand Cherokee trims aside from the Laredo, Altitude, and Limited, is the 5.7 L Hemi V8 gasoline engine with the Multi Displacement System (MDS) cylinder deactivation system, producing 360 horsepower (365 PS; 268 kW), and 390 lb⋅ft (529 N⋅m; 54 kg⋅m) of torque.
Overland - 2007–2009: Includes: 5.7 L Hemi V8 engine, AM/FM radio with GPS navigation and six-disc integral CD changer, Sirius satellite radio, wire mesh grille insert, leather-and-suede seats with embroidered Overland logos, wood-trimmed steering wheel, leather-wrapped emergency brake handle with leather-wrapped door handles as well, and ...
An upgrade is available to the 5.7-liter (350 cu in) Chrysler Hemi, a V8 engine, which produces 395 horsepower (295 kW) and 410 pound force-feet (556 N⋅m) of torque. The engine is equipped with Variable Cam Timing (VCT) and a Multi-Displacement System (MDS) which shuts down four of the engine's eight cylinders when operating between 1,000 and ...
Wards 10 Best Engines is an annual list of the ten "best" automobile engines available in the U.S. market, that are selected by Wards AutoWorld magazine. The list was started in 1994 for model year 1995, and has been drawn every year since then, published at the end of the preceding year.
Citadel - 2011–2024: Highest trim level, luxurious features, 3.6 L Pentastar V6 or 5.7 L Hemi V8 engines. Pursuit - 2019–2023, police model, V6-AWD and V8-AWD. SRT 392 - 2018–2024: High performance trim level; 6.4 L Hemi V8 engine only. SRT Hellcat - 2021 and 2023: High performance trim level; 6.2 L Supercharged Hemi V8 engine only