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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 5.7 L Hemi is made at Chrysler's Saltillo Engine plant in Ramos Arizpe, Mexico. The Hemi was on the Ward's 10 Best Engines list for 2003 through 2007, and again in 2009. This engine has been used in the following vehicles: 2003–2024 Ram Pickup; 2004–2009, 2011–Present Dodge Durango; 2005–2008 Dodge Magnum R/T; 2005–2023 Chrysler 300C,
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.
The Hemi-6 is a pushrod O.H.V. (overhead valve engine), with combustion chambers comprising about 35% of the top of the globe. This creates what is known as a low hemispherical shaped chamber. In this way, the "Hemi" moniker was used for the same kind of marketing cachet as Chrysler's 1950s-1970s Hemi V8 engines.
The Chrysler B and RB engines are a series of big-block V8 gasoline engines introduced in 1958 to replace the Chrysler FirePower (first generation Hemi) engines. The B and RB engines are often referred to as "wedge" engines because they use wedge-shaped combustion chambers; this differentiates them from Chrysler's 426 Hemi big block engines that are typically referred to as "Hemi" or "426 Hemi ...
The Dodge Challenger is the name of three generations of automobiles produced by the ... Powered by a Hemi 392 slightly modified for road racing extremes and ...
The mid-level Challenger R/T is powered by a 5.7 L (345 cu in) Hemi V8 coupled to a 5-speed automatic transmission or a Tremec TR-6060 6-speed manual transmission. On cars equipped with the automatic transmission, the engine features the Multi-Displacement System and is rated at 372 hp (277 kW; 377 PS) (SAE) and 398 lb⋅ft (540 N⋅m; 55 kg⋅ ...
The Magnum had four engine options; the SE features the 190 hp 2.72 L LH V6, the SXT had the 250 hp (190 kW) 3.5 L V6, and the RT had the new 340 hp 5.7 L Hemi V8. The SRT-8 has a 425 hp 6.1 L Hemi engine. All-wheel drive became an option in 2005 on SXT and RT models.
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