The 392-cubic inch (6.4-liter) HEMI® V-8 delivers 470 horsepower (351 kW) and 470 (637 N•m) lb.-ft. of torque. The torque band is extremely flat allowing for strong standing starts and improved straight-line performance throughout the rpm range. An advanced active intake manifold along with high-lift cam with phasing provides maximum low-end torque and high-end power while still delivering up to 23 miles per gallon on the highway with the standard manual transmission. Performance-tuned engine mounts improve idle stability and ride control at all speeds.
Standard Fuel Saver Technology (four cylinder mode) in automatic transmission equipped models allows the engine to operate economically on four cylinders or use the power of all eight cylinders when needed. The EPA fuel economy miles per gallon (mpg) (City/Hwy) ratings for the 2012 Dodge Challenger SRT8 392 are 14/22 for automatic transmission models and 14/23 for manual-transmission models.
The 2012 Dodge Challenger SRT8 392 features a standard Tremec TR-6060 six-speed manual transmission and a dual-disc high performance clutch – a proven performer that was first offered on the 2008 Dodge Viper SRT10®.
The optional five-speed automatic transmission features new, standard steering wheel mounted paddle shifters that join the center console mounted Auto Stick, allowing for a choice of spirited shifting on both the road and the race track. Both methods give the driver the ability to manually select specific gears on the transmission.
Sitting a half-inch lower than non-SRT models, the 2012 Challenger SRT8 392 rides on either the standard five-spoke, 20 x 9-inch fully forged aluminum wheels or available seven-spoke, 20 x 9-inch lightweight forged aluminum wheels with satin black painted pockets. Standard Goodyear RSA All-Season tires or available Goodyear F1 Supercar Three-Season complement the performance design cues and deliver serious gripping performance and handling.
The standard SRT performance brake package produces world-class stopping power of 60 to 0 mph in just 117 feet from 14.2 inch (front) and 13.8 inch (rear) vented/slotted rotors with four-piston Brembo fixed calipers painted red. The three-mode electronic stability control system with knockback mitigation also includes four-wheel ABS, all-speed traction control, electronic brake-force distribution, Brake Assist and Hill-start Assist (HSA).