The new and improved 2011 Dodge Challenger SRT8 packs more power and
excitement than any previous Challenger. The engineers at Dodge bored
out the 6.1 liter to an impressive 6.4 liter, 392 cubic inch
powerhouse. This new motor is rated for 470 horsepower and 470
pound-feet of torque, which is about 45 more horsepower and 50
pound-feet of torque above the 6.1 liter motor. In addition to a more
powerful engine, the handling and suspension are improved, with revived
damper valving, improved suspension geometry, and tighter steering
ratios.