2011 Dodge Challenger SRT8 392 Inaugural Edition - the car engine produce 470 horsepower and 470 lb.-ft. of torque, the newest HEMI engine in the SRT product lineup provides an additional 90 lb.-ft. of torque at 2,900 rpm versus the previous 6.1-liter V-8 engine. Like the original 392 HEMI, the performance on the street and at the track is sure to turn heads with numbers such as 0-60 mph in high 4-second range and quarter-mile elapsed time in the high 12s. New for 2011 is the Fuel Saver technology in automatic transmission equipped models, which allows the engine to operate economically on four cylinders or use all eight cylinders when needed.