The Hellcat engine was the most powerful engine produced by Chrysler as well as the most powerful production engine ever in a muscle car until the Dodge Demon was introduced. The Demon version of the Hemi V8 features a number of improvements over the Hellcat variant. With these improvements, the Challenger SRT Demon is rated at 840 horsepower when running on 100-octane unleaded racing gasoline.
Terrifying and mean, we wanted our Demon design to fall directly in line with the attitude of the powerplant that lies in the heart of that that high horsepower friend of Satan living in your garage. Hang this huge version of the Demon Badge on your garage, bar, shop, or man cave wall and let it reflect the attitude of both you and that Devil's room mate you ride with.