For 2015, the Challenger SRT with a Hellcat engine is propelled by the new supercharged 6.2-liter HEMI V-8. Its 600-plus horsepower rating will be the highest of any V-8 engine in Chrysler Group's celebrated history. The all-new V-8 engine can be mated with an upgraded six-speed manual transmission or a beefy, new TorqueFlite eight-speed automatic – the first such gearbox ever offered in the Dodge Challenger SRT's time-honored segment.
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