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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 ...
Chrysler hoped to have the ball-stud in production sometime between 1971 and 1973. [4] In testing, it proved able to outperform the single four-barrel carburetted A134 440, and lagged behind the eight-barrel A102 426 Street Hemi. [7] About one year of development was put in before the project was stopped, in late 1969. [4]
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.
While Tom Hoover developed the 426 Hemi engine, cylinder heads can be interchanged between specific engines. The development team at Chrysler tried using wedge cylinder heads at first. Horsepower was recorded at 490 base horsepower. When swapped with the hemispherical heads, the engine immediately produced 550 horsepower. [1]
It is not the same as Chrysler's 360 V8. [4] Chrysler continued production of the AMC 360 engine after the 1987 buyout of AMC to power the full-size Jeep Wagoneer (SJ) SUV that was produced until 1991. [5] It was one of the last carbureted car/truck engines built in North America. [6] Chrysler never used this engine in any other vehicle.
Classic car hobbyists may also install reproductions of a rare powerplant in a classic car (this is most often seen in Mopar muscle cars that have the 426 Hemi installed into them). Aftermarket engines are used in many forms of motorsport .
In this way, the "Hemi" moniker was used for the same kind of marketing cachet as Chrysler's 1950s-1970s Hemi V8 engines. The Hemi-6 valves are angled apart (splayed) 18 degrees (included angle) along the crankshaft axis, and the intake valves are as large as 1.96 in (50 mm). The 6 intake and 6 exhaust valves open slightly towards each other ...
The Coronet R/T was available as a two-door hardtop or convertible. The standard engine was Chrysler's largest, the 440 cu in (7.2 L) V8 producing 375 bhp and dubbed the Magnum. The only engine option was the 426-cid Hemi, now in its second year in "Street" trim and again rated at 425 bhp. It was a $908 option.