Engine Options, Horsepower, and Acceleration. Base engine: 3.6-liter V6 with 303 horsepower and 268 pound-feet of torque. Available engines: 5.7-liter Hemi V8 with 375 horsepower andEngine Options, Horsepower and Acceleration. Base engine: 3.6-liter V6 with 303 horsepower and 268 pound-feet of torque. Available engines/powertrains: 5.7-liter V8 with 375 horsepower The Dodge Challenger was introduced for the 1970 model year, at the height of the pony car craze, to compete with the Ford Mustang that started it all in 1964. The inaugural Challenger models featured straight-six-cylinder and V8 engines, including the 425-horsepower, 7.0-liter Hemi. The Challenger's first generation ceased production in 1974.
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The 5.7L HEMI® V8 offers 360 horsepower and 390 pound-feet of torque, making it capable of towing up to 7,400 pounds. Properly equipped with Variable Valve Timing (VVT) and an eight-speed automatic transmission, this V8 has a manufacturer's estimated 22 highway mpg.
The HEMI V8. The kind of power that the HEMI V8 is capable of putting out is going to come with a cost. You’re going to pay for that power in terms of fuel economy compared to the V6, however. but with the RAM’s Fuel Saver Technology, the smart engine will shut down unneeded cylinders when the vehicle is at cruising speed.
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