HENNESSEY has released video footage of its most extreme Camaro-based creation, known as The Exorcist, casting out (Dodge) Demons on a chassis dyno to the tune of 715kW at the rear wheels.

Based on the Chevrolet Camaro ZL1, The Exorcist uses a heavily tweaked version of its 6.2-litre supercharged V8 engine called the LT4. As standard the ZL1 puts out a claimed 477kW at the flywheel, before drivetrain losses.

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Modifications to the engine itself include head porting, an upgraded camshaft, long tube stainless steel exhaust headers and a less restrictive induction system. Hennessey’s custom ECU tune is then loaded to tie it all together.

More details about gearboxes, drag packages and costs are available here, but for now have a listen to The Exorcist at wide open throttle as it ferociously snarls to redline.

Stick around to the end of the video for a sample of the car’s lumpy exhaust note at idle, which is an arguably even more intimidating sound than its monstrous V8 at full noise.

Hennessey has built a reputation for extreme horsepower vehicles based on performance cars from other manufacturers, and has announced plans for a truly outrageous 1119kW version of the Dodge Demon.