The SOHC eight-valve 4G54 (also known as the G54B) displaces 2.6 L (2,555 cc), with bore × stroke at 91.1 mm × 98.0 mm. The G54B had a cylinder head with additional jet valves to improve emissions (MCA-Jet system). It was designed for longitudinal use in rear-wheel drive and all-wheel drive vehicles. It was equipped with a Hitachi two-barrel carburetor with a vacuum-operated progressive secondary, except for the turbocharged version and a version used in Australian Mitsubishi Magnas, which used fuel injection. This engine was also used on Chrysler's front-wheel drive K-cars and their derivatives from 1981 until 1987, when it was replaced by Chrysler's own 2.5 L engine. This engine was commonly paired with Chrysler's A470 3-speed automatic transmission on Chrysler vehicles. Chrysler sometimes marketed this engine as a "Hemi".
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