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2. Chrysler Hemi engine - Wikipedia

   en.wikipedia.org/wiki/Chrysler_Hemi_engine

   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.

3. Jeep Grand Cherokee (WK) - Wikipedia

   en.wikipedia.org/wiki/Jeep_Grand_Cherokee_(WK)

   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.

4. Ram pickup - Wikipedia

   en.wikipedia.org/wiki/Ram_pickup

   While Dodge introduced a new Ram 1500 for 2002, the second-generation Ram was carried over for the 2002 heavy-duty 2500 and 3500 trucks. The new third-generation Ram would not debut in the 2500 or 3500 series until 2003. Part of this delay was due to the then-new 5.7 L Hemi engine not being ready for production.

5. Jeep Grand Cherokee - Wikipedia

   en.wikipedia.org/wiki/Jeep_Grand_Cherokee

   When equipped with the 5.7 L HEMI V8 gasoline engine, the all-new Grand Cherokee has a maximum towing capacity of 7,200 pounds (3,300 kg). However, the 2023 models no longer offer this V8 option. [37] The 4xe PHEV powertrain, first available in Jeep Wrangler (JL), is introduced to the Grand Cherokee in this generation. It is available on the ...

6. Multi-Displacement System - Wikipedia

   en.wikipedia.org/wiki/Multi-Displacement_System

   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.

7. Hemispherical combustion chamber - Wikipedia

   en.wikipedia.org/wiki/Hemispherical_combustion...

   A hemispherical head ("hemi-head") gives an efficient combustion chamber with minimal heat loss to the head, and allows for two large valves.However, a hemi-head usually allows no more than two valves per cylinder due to the difficulty in arranging the valve gear for four valves at diverging angles, and these large valves are necessarily heavier than those in a multi-valve engine of similar ...