The Hennessey Venom GT was already one of the fastest cars in the world and now the company has announced it has been upgraded to produce an astounding 1451 bhp (1082 kW).

The Hennessey Venom GT was already one of the fastest cars in the world and now the company has announced it has been upgraded to produce an astounding 1,451 horsepower.

Set to debut at SEMA, the 2016 model produces 207 horsepower more the previous version which hit a top speed of 435.1 kilometres per hour (270.4 MPH) back in 2014.

Hennessey says the performance increase is a result of being able to run E85 Flexfuel. This enables the boost pressure of the biturbo 7.0-litre V8 to increase from 19 psi to 26 psi.

Thanks to the extra power, Hennessey says the 1,244 kg (2,743 lbs) model should be able to accelerate from 0-100 km/h (0-62 MPH) in 2.4 seconds, 0-160 km/h in 4.4 seconds and 0-320 km/h in 12.8 seconds. The company also estimates the car will run the quarter mile in 9.4 seconds at 268 km/h (167 MPH) and have a top speed in excess of 450 km/h (280 MPH).

In a statement, John Hennessey said "Being the fastest matters. We are intent on keeping the Venom as the fastest, best performing and most exciting hypercar on the road".

Only a "handful" of Venom GT's will be built next year as the company says they are focused on the next-generation model called the Venom F5. Little is known about it but Hennessey said "We plan to demonstrate our improved power and performance both in terms of straight line acceleration as well as road course handling and lap time performance."

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