Yee-Haw! Hennessey C8 Corvette nails 328km/h

John Hennessey's tuned C8 Corvette hits 320km/h

Known for building quick cars, Hennesseyโ€™s tweaked C8 Corvette has just been clocked at 328km/h – the first C8 to go faster than 320km/h.

Itโ€™s taken around seven years for John Hennessey and his crew to eke out an extra 5mph from a Corvette. Back in 2013, Hennessey drove a C7 Corvette to 200.6mph (320.96km/h).

Fast forward to just the other day and, during validation for a new exhaust system, 15-time SCCA National Champion, retired director of the GM Performance Vehicles Division and current Chief Engineer of Hennesseyโ€™s Venom F5 program, John โ€œHeinrocketโ€ Heinricy, floored a brand-new C8 Corvette to 328km/h.

John Hennessey's tuned C8 Corvette hits 320km/h

Hennessey didnโ€™t waste any time either, only taking possession of the โ€˜Vette back in March. Sprinkling some black magic onto the thing (like Nitrous Oxide), Hennessey wheeled the C8 out onto a section of track at Continental Tiresโ€™ test facility at Uvalde in Texas. Not long after that, the thing stopped the VBox GPS clock at 328km/h, becoming not just stupid-fast but the first C8 Corvette to break 320km/h.

โ€œWe designed a new stainless-steel exhaust system for the C8 that slightly increases power (20 hp), improves sound and is lighter by around 12 pounds,โ€ said company founder and chief horsepower evangelist, John Hennessey.

The exhaust system will be available for punters soon as will a twin-turbo upgrade for the C8, along with the usual Hennessey extras of upgraded wheel and tyres, suspension & brake upgrades, carbon fibre body components and more.

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