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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 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.
Engine choices were 440 four-barrel, 440 with three two-barrels (Six Pack), and 426 Hemi. Emission restrictions such as lower compression ratios and faster-acting choke operation lowered the base 440 output by 5 hp (3.7 kW), to 370 hp (280 kW). The 440 Six Pack was down to 385 hp (287 kW), but the Hemi was still rated at 425 hp (317 kW).
Tom Hoover was the leading engineer of the Chrysler 426 Hemi engine.. Tom Hoover's development of the first trademarked Hemi engine through Chrysler Corporation was a major success for the brand through the mid to late 1960s and early 1970s.
2003–present: Hemi. 5.7L Hemi - The smallest modern Hemi engine, called the Eagle, introduced in 2002. 6.1L Hemi - A larger modern Hemi, 2004–2010. 6.4L Hemi - A larger bore modern Hemi engine, called the Apache, introduced in 2011. 6.2L Hemi - A supercharged Hemi engine, called the Hellcat, introduced in 2014.
The 1971 Hemi 'Cuda convertible is now considered one of the most valuable collectible muscle cars. Only thirteen were built, seven of which were sold domestically. The most recent public sale was at the June 2014 Mecum auction in Seattle, where a blue-on-blue 4-speed sold for US$ 3.5 million (plus buyers premium).
In 1999, Chrysler unveiled the Plymouth Howler concept at the Specialty Equipment Market Association's annual car show in Las Vegas, Nevada. Inspired by hot rod trucks and based on the Prowler, the Howler featured a small, truck-like bed with a tailgate and hard tonneau cover.
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 ...