SpeedFactory Sports Cars SF600R Dodge Challenger

American tuners SpeedFactory have increased the output of the Dodge Challenger SRT8 from 425 hp to 600 hp (447 kW / 608 PS) without the use of a supercharger. 2010 SpeedFactory Sports Cars SF600R Dodge Challenger Starting with the standard 6.1-liter HEMI engine engineers increased the displacement to a full 7.0-liters (426 cu in). In addition to a higher volume air intake system matched with a