Professor Loco, or John Hennessey as he prefers to be called, is at it again. This time he’s turned his tuning wrenches on the Dodge Challenger and Charger Hellcat twins to give the cars a much-needed (?) shot of power. These cars come from the factory with a 6.2-liter V-8 engine that produces 707 horsepower, for criminy sakes! For Hennessey that…
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Hennessey HPE800/850 Hellcats Top 800 Horsepower