The Venom GT is powered by a twin-turbocharged 427 cu in (7.0 L) GM LS7 V8 engine. Normally, the forced induction 7.0-liter V8 engine in the Venom GT Spyder generates 1,451 hp (1,082 kW 1,471 PS) and 1,287 lb⋅ft (1,745 N⋅m) of torque. In May, 2016, the Hennessey Team revealed that the car was about 300 hp (224 kW) down on power due to issues with one of the car's three high capacity fuel pumps.

As with previous speed tests, the run was independently verified by Racelogic as World Fastest road legal open-top sports car. On Mathe Hennessey Venom GT Spyder recorded a top speed of 265.57 mph (427.4 km/h) at California's Naval Air Station Lemoore, celebrating Hennessey's 25th anniversary.

As the run was in a single direction, and only 29 cars were produced (to qualify for Guinness World Records a minimum of 30 cars are required to be produced), it does not qualify as the world's fastest production car in the Guinness Book of Records. On February 14, 2014, on the Kennedy Space Center's 3.22-mile (5.2 km) shuttle landing strip in Florida, the Hennessey team recorded a top speed of 270.49 mph (435.31 km/h) in a limited distance of 2.3 miles (3.7 km) with the Director of Miller Motorsport Park, Brian Smith driving the car. Hennessey used two VBOX 3i data logging systems to document the run and had VBOX officials on hand to certify the numbers. On April 3, 2013, the Hennessey Venom GT crested 265.7 mph (427.6 km/h) over the course of 2 miles (3.2 km) during testing at United States Naval Air Station Lemoore in Lemoore, California. In addition, the car set an unofficial record for 0–200 mph (0–322 km/h) acceleration at 14.51 seconds, beating the Koenigsegg Agera R's time of 17.68 seconds, making it the unofficial fastest accelerating road legal car in the world. On January 21, 2013, the Venom GT set a Guinness World Record for the fastest road legal car from 0–186 mph (0–300 km/h) with an average acceleration time of 13.63 seconds. The Venom GT is based on the Lotus Elise/ Exige. The Hennessey Venom GT is a limited-production high performance sports car manufactured by US manufacturer Hennessey Performance Engineering.

Longitudinal rear mid-engine rear-wheel-driveĤ27 cu in (7.0 L) twin-turbocharged LS7 V8

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