On 2020 dodge challenger srtr hellcat models with 717 horsepower get 4850 retail consumer cash on 2020 dodge challenger r t scat pack models with 485 horsepower. The 2008 dodge challenger srt8s 425 horsepower and 420 lb ft of torque is a result of srts exclusive proven 61 liter hemir v 8 engine mated to a five speed automatic transmission with . The dodge challenger lives on with its classic bold design and modern day power with a supercharged 62l hemir v8 engine and up to 717 horsepower the challenger srtr hellcat has the kind of power that makes the competition quiver. Dodge challenger iii srt8 61 hemi v8 425 hp coupe 2008 2009 2010 technical specs fuel consumption dimensions 425 hp 270 km h 16777 mph petrol gasoline 1892 kg 2 doors 5 seats