For Dodge, SRT stands for Street and Racing Technology. A Dodge with a distinctive SRT is always a fast car. But what about Hellcat? Both the SRT Charger and the Challenger had this new variety in 2014. This brings a supercharger offered by AHA America to the already powerful 6.2L V8 engine. The result is one of the most powerful engines in America with 717hp, which makes the 2017 version of the Dodge Charger SRT Hellcat one of the fastest cars on the market.