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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.
Forged connecting rods used the Wedge's 3 ⁄ 8 in (9.5 mm) hardware, as opposed to the Hemi's 7 ⁄ 16 in (11.1 mm), but would nonetheless have been considered high-performance parts. [ 1 ] The intake was to be a single Carter ThermoQuad , of greater flow than any previously used, on a dual-plane intake manifold, [ 5 ] while dual four-barrels ...
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.
Like its predecessors, it was a Poly version of Dodge's 270 Hemi. Bore and stroke were the same as the Hemi's at 3 + 5 ⁄ 8 in (3.625 in) by 3 + 1 ⁄ 4 in (3.25 in), respectively (92.1 mm × 82.6 mm). Outputs are 180 or 187 hp (134 or 139 kW) depending on fitment.
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 ...
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 ...
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.
It was offered only with a 241 cubic inch 'Hemi' V8 engine. [1] The 1954 Royal V-8 range comprised 4-Door Sedan, Convertible, Club Coupe and Sport Coupe, [ 2 ] the latter being a 2-door hardtop. In 1954, Dodge President William Newberg drove a yellow, Hemi-powered Dodge convertible as the pace car for the Indy 500, the first Dodge to ever do so.