The Dodge Challenger SRT Hellcat 2018 and the Dodge Challenger SRT Demon 2018 were originally just single, one-of-a-kind motor that was part of the Dodge brand in many respects. The 392 cubic-inch HEMI engine was mounted under the hood, capable of producing 485 hp starting with the Dodge Challenger SRT 392. It was only the name Dodge until the Jeep Grand Cherokee SRT, fitted with the same engine, was produced.