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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.
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.
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 ...
2005 was the last year for the first version of the 5.7 L (345 cu in) Hemi V8. 2006 half-ton models offered the Multi-Displacement System Hemi V8 engine that also became available in Chrysler and Dodge sedans. This engine featured the same performance but had a cylinder-deactivating feature enabled under light loads to increase fuel economy by ...
The Super 8 Hemi came equipped with a Chrysler 5.7-liter EZB/EZD HEMI OHV V8 engine developing up to 353 hp (263 kW; 358 PS), 395 lb⋅ft (536 N⋅m) torque and has a top speed of 154 mph (248 km/h). It will go from 0-60 in about 5.7 seconds and mated with a four-speed automatic transmission with an Autostick .
1.42 Hemi-head engines. ... Engine number Model year Vehicle type Engine type 838 00501>99999 2008 Cayenne S 4801 858 00501>99999 2008 Cayenne GTS 4801 848 00501 ...
The police version of the Dodge Charger was made available with a choice of a 3.6-liter Pentastar V6 (292 hp) or 5.7-liter HEMI V8 (370 hp) engine, larger 14.5-inch front brake discs, increased front-caliper swept area from 289 sq.in to 388 sq.in., increased rear-caliper swept area from 291 sq.in. to 296 sq.in., Police-specific Secure Park ...
For 1997, the 3.9 L engine's torque output was increased to 225 lb⋅ft (305 N⋅m), with a compression ratio of 9.1:1. [8] Firing order was 1-6-5-4-3-2. [8] This engine was last produced for the 2003 Dodge Dakota pickup. Starting in the 2004 model year, it was entirely withdrawn from production and replaced with the 3.7L PowerTech V6 engine.