Hennessey announced that it’s currently working on an upgrade package for the new Dodge Challenger SRT8. There will be two power upgrade levels, first one up to 620 hp at 5,200 rpm and 650 lb-ft of torque, while the other one increases the engine’s power output to 650 hp at 4,800 rpm and 680 lb-ft. of torque. The extra power comes from several new features that include new cold air induction system, high flow cylinder heads with polished combustion chambers and lowered compression ratio, Garrett 67 mm Ball-Bearing turbocharger and new exhaust system. According to Hennessey, the Challenger SRT600 will go from 0 to 60 mph in 3.8 seconds, the 620 hp version, and in 3.6 seconds, the 650 hp version. Also, the SRT600 does the quarter mile in 11.9 seconds at 121 mph.
Check out more photos and a video of the Dodge Challenger SRT600 after the jump.
Photo Gallery: Dodge Challenger SRT8 tuning by Hennessey
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