还有可能采用 392 HEMI(6.4L HEMI) 此发动机是赛车用发动机, 但是可能在降低输出功率后装备在挑战者上, Automobile 杂志说510马力的392 HEMI可能会被采用.
There are rumors that the new 392 Hemi crate engine, designed for racing, will go along with the new Dodge Challenger body. The 392 is apparently a racing-only engine in current form, not a production design, but a lower-power version may well be made for production and appear in the Challenger. The Challenger concept car to be shown at NAIAS (Detroit, January 2006; the Camaro will also be shown) uses, not surprisingly, the SRT-8 6.1 liter engine — but, unlike any current production LX car, it also has a six-speed manual gearbox. (Automobile suggested that the 510 horsepower 6.4 liter 392 Hemi might be used.) There are issues with the 392 - most notably the question of what untrained drivers will do with that much power. A fairly large number of Vipers left this world unexpectedly.