Venom 800 pack available for 2013 to 2017 cars.

Hennessey Performance made its name tuning the original Dodge Viper, adding two turbos that boosted the 8.0-litre V10 to 1,000 horsepower. The legendary model may be on its way out of production now, but that hasn't stopped Hennessey developing a new supercharger kit for the most recent generation of Viper.

Called Venom 800, the addition of a blower running at five pounds-per-square-inch is just the start of the modifications included in the pack. Hennessey also adds an air-to-air intercooler, high-flow fuel injectors, an engine management system upgrade, all the necessary gaskets and fluid and a three-inch stainless steel exhaust system.

The result of all that is 808 brake-horsepower and 790 pound-feet of torque. Which translates to a 0-60 miles-per-hour time of 2.9 seconds and a quarter-mile sprint of 10.5 secs at 143 mph (on the optional drag tires). It's fast, in other words. Very fast. And it sounds utterly wonderful.

Hennessey also throws in Hennessey and Venom 800 exterior emblems, numbered dash and engine plaques and a set of premium floormats.

The Venom 800 upgrade is available on 2013 to 2017 Viper, GTS and ACR models (no price is quoted). None of which really need a supercharger, as they are pretty unhinged in standard form anyway. But why not make them even more mental?

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