New engine rated at more than 600 hp
DETROIT -- The 2015 Dodge Challenger SRT unveiled today is Chrysler Group’s first use of a new 6.2-liter supercharged V-8 engine rated at more than 600 hp to take on the Ford Mustang GT500 and Camaro ZL1.
The motor, known as the Hellcat, is expected to rival that of the 640-hp, 8.4-liter naturally aspirated V-10 that powers the automaker’s halo car, the 2014 SRT Viper.
For 2015, Dodge will split its Challenger SRT into two levels -- one with its traditional 6.4-liter Hemi, which has been increased from 470 hp to 485 hp and its torque rating from 470 pounds-feet to 475 pounds-feet -- and the higher-end version with the Hellcat. Either can be mated to a six-speed manual or eight-speed automatic transmission.
The Hellcat-powered Challenger will come with two key fobs, Dodge said. A black key fob automatically limits the engine’s output to 500 hp, while a special red key fob unlocks its full power. A separate valet mode that can be unlocked only by a programmable code dramatically limits the output of the Challenger SRT engine to no more than 4,000 rpm and disables launch control.
Dodge is also introducing new electronic drive modes on the 2015 Challenger SRT that uses electronic switches through the coupe’s Uconnect infotainment system to control horsepower, shift speeds, steering, traction and suspension.