Hennessey

Chevrolet 7.0L twin-turbo LS7 V8 producing 1244hp. 1564Nm torque. Ricardo six-speed manual transmission. RWD mid-engine layout. 4655mm length. 2728mm wheelbase. 1244kg curb weight. Two-seat hypercar. Lotus Exige chassis modified heavily. Carbon fiber body panels. 0-60 mph 2.4 seconds. 270.49 mph verified Kennedy Space Center. 435.31 km/h. Guinness World Record 2014. 0-200 mph 14.51 seconds record. Sealy Texas manufacturing. John Hennessey founder. Tuning company origin. 13 units built total. Venom GT Spyder convertible. American muscle hypercar. Lotus platform extreme modification. Twin-turbo V8 power. Texas engineering. Independent hypercar manufacturer.

Fury 6.6L twin-turbo flat-plane V8 producing 1817hp. 1617Nm torque. Nine-speed automated manual CIMA. RWD mid-engine layout. 4660mm length. 2744mm wheelbase. 1360kg dry weight. Two-seat hypercar. Carbon fiber monocoque own design. Carbon fiber body panels. 0-60 mph 2.6 seconds. 311 mph targeted top speed. 500 km/h goal. Low drag 0.39 Cd. Fury engine bespoke Hennessey. 24 units planned production. Sealy Texas manufacturing. American bespoke hypercar. First clean-sheet Hennessey. Not Lotus based. Revolutionary design own. Texas engineering excellence. American 300 mph dream. Record-breaking ambition.

Fury 6.6L twin-turbo V8 producing 1817hp. 1617Nm torque. Nine-speed automated manual. RWD mid-engine layout. 4660mm length. 2744mm wheelbase. 1295kg dry weight lighter. Two-seat track hypercar. Carbon fiber monocoque. High downforce aerodynamic package. 0-60 mph 2.5 seconds. Track-focused variant. Not street legal pure track. Massive rear wing. Front splitter aggressive. Diffuser enhanced. Downforce maximum priority. 10 units planned production. Sealy Texas manufacturing. Track day weapon. American track hypercar. Hennessey performance peak.

The Lotus-derived twin-turbo V8 that propelled Hennessey into the hypercar stratosphere. Based on the GM LS architecture, this 7,011cc 90° V8 featured an aluminum block with six-bolt main bearings and a forged steel crankshaft. The cylinder heads used pushrods with two valves per cylinder, but extensively ported and fitted with titanium intake valves and Inconel exhaust valves. The turbochargers were twin Garrett GT3582 ball-bearing units with individual wastegates, producing 18-24 psi of boost. The fuel system employed eight individual throttle bodies with dual Walbro 400 LPH fuel pumps and 160 lb/hr injectors, while ignition used MSD coils with custom timing control. With 9.0:1 compression, it produced 1,244 hp at 6,600 RPM and 1,155 lb-ft at 4,400 RPM. The engine management was a Motec M800 system with comprehensive data logging. Weighing 548 pounds, this engine delivered one of the highest specific outputs ever achieved at the time—177 hp/liter—and powered the Venom GT to 270+ mph top speeds.

The bespoke 'Fury' V8 developed specifically for Hennessey's ultimate hypercar. This 6,599cc 90° V8 featured a semi-stressed aluminum block with billet main caps and a forged 4340 steel crankshaft. The cylinder heads used pushrod actuation but featured completely bespoke casting with 2.25-inch titanium intake valves and 1.85-inch Inconel exhaust valves. The turbochargers were twin Precision 6870 CEA ball-bearing units with individual 60mm wastegates, producing 24-32 psi of boost. The fuel system employed port and direct injection with 12 individual throttle bodies, eight 170 lb/hr port injectors and eight 3,500 psi direct injectors. With 8.5:1 compression, it produced 1,817 hp at 8,000 RPM and 1,193 lb-ft at 5,000 RPM. The engine management was a Motec M150 system with comprehensive safety protocols. Weighing 519 pounds, it achieved an astonishing 275 hp/liter specific output—among the highest ever for a production engine—with a redline of 8,300 RPM and power delivery optimized for 300+ mph capability.

The extreme supercharged LT4 that redefined American muscle car performance. Based on the GM LT4 engine, this 6,162cc 90° V8 featured a reinforced aluminum block with forged pistons and titanium connecting rods. The stock supercharger was replaced with a 3.0L Magnuson TVS2650 unit with 20 psi of boost and massive air-to-water intercoolers. The cylinder heads received extensive CNC porting and larger valves, while the camshaft featured aggressive 40% larger duration. The fuel system was upgraded with a high-flow lobe on the LT4's direct injection pump plus supplemental port injection with 130 lb/hr injectors. With 9.5:1 compression, it produced 1,000 hp at 6,500 RPM and 950 lb-ft at 4,200 RPM. The engine management used HP Tuners software with custom calibration for the dual-injection system. This package transformed the ZL1 into a 220+ mph supercar-killer while maintaining factory driveability and emissions compliance.

The twin-turbo conversion that created the ultimate track-focused Camaro. Based on the GM LT4 engine, this 6,162cc 90° V8 featured a reinforced block with Callies billet crankshaft and Carrillo connecting rods. The factory supercharger was removed in favor of twin Garrett G35-900 turbochargers with individual 44mm wastegates and massive front-mounted intercoolers. The cylinder heads received extensive CNC porting and larger titanium valves, while the camshaft featured radical track-focused profile. The fuel system used dual high-pressure fuel pumps with 130 lb/hr direct injectors and supplemental 120 lb/hr port injectors. With 9.0:1 compression and 26 psi of boost, it produced 1,000 hp at 6,800 RPM and 980 lb-ft at 4,500 RPM. The engine management was a Motec M150 system with comprehensive traction control integration. This package was specifically optimized for circuit racing, with linear power delivery and massive mid-range torque that could propel the Camaro to 200+ mph on long straights.

The supercharged HEMI built to move the massive 6x6 pickup. Based on the Dodge 6.2L Hellcat engine, this 6,162cc 90° V8 featured a reinforced block with forged pistons and H-beam connecting rods. The stock 2.4L supercharger was upgraded with a 3.0L unit producing 18 psi of boost, with massive intercoolers to combat heat soak. The cylinder heads received CNC porting and larger valves, while the camshaft featured increased duration and lift. The fuel system used upgraded injectors and high-flow fuel pumps, while ignition employed high-output coils. With 9.5:1 compression, it produced 850 hp at 6,400 RPM and 775 lb-ft at 4,200 RPM. The engine management was a custom calibration building on the factory PCM. This package was specifically tuned for low-end and mid-range torque to handle the Mammoth's 7,000+ pound weight, while still delivering 0-60 mph in 4.5 seconds and a top speed of 130 mph despite the massive 37-inch tires and six-wheel drive system.

The highly modified EcoBoost V6 built for high-speed off-road performance. Based on the Ford 3.5L EcoBoost engine, this 3,496cc 60° V6 featured a reinforced aluminum block with forged pistons and connecting rods. The stock turbochargers were replaced with larger BorgWarner EFR series units with ball-bearing technology and electronic wastegate control, producing 24 psi of boost. The cylinder heads received extensive porting and larger valves, while the camshafts featured increased duration. The fuel system used upgraded high-pressure fuel pumps and 30% larger injectors, while ignition employed high-output coil-on-plug units. With 9.5:1 compression, it produced 600 hp at 5,800 RPM and 622 lb-ft at 4,200 RPM. The engine management was a custom calibration that maintained the factory computer's sophisticated traction and stability control systems. This package transformed the Raptor into a 600-horsepower dune-jumping monster capable of 130+ mph off-road speeds.

The supercharged Coyote swap that created the ultimate off-road Bronco. Based on the Ford 5.0L Coyote engine, this 4,951cc 90° V8 featured a reinforced aluminum block with forged pistons and titanium connecting rods. The supercharger was a 3.0L Whipple twin-screw unit producing 18 psi of boost, with massive air-to-water intercoolers. The cylinder heads received extensive CNC porting and larger valves, while the camshafts featured increased duration and lift. The fuel system used dual high-pressure pumps with 130 lb/hr injectors, while ignition employed high-output coil-on-plug units. With 9.5:1 compression, it produced 750 hp at 7,500 RPM and 650 lb-ft at 4,800 RPM. The engine management was a Ford Performance Control Pack with custom calibration. This package was specifically tuned for low-RPM torque and throttle response ideal for rock crawling and high-speed desert running, while the 7,500 RPM redline provided explosive power when needed.

The twin-turbo conversion for the mid-engine Corvette that challenges hypercars. Based on the GM LT5 engine, this 6,162cc 90° V8 featured a reinforced aluminum block with billet main caps and forged titanium internals. The factory supercharger was removed in favor of twin Precision 6466 ball-bearing turbochargers with individual 50mm wastegates and sophisticated charge cooling. The cylinder heads received extensive CNC work and larger valves, while the camshaft featured increased duration. The fuel system used triple high-pressure pumps with massive direct injectors and supplemental port injection. With 8.8:1 compression and 28 psi of boost, it produced 1,200 hp at 7,400 RPM and 1,100 lb-ft at 4,600 RPM. The engine management was a Motec M150 system fully integrated with the Corvette's chassis controls. This package transformed the ZR1 into a 250+ mph mid-engine monster capable of sub-2.5 second 0-60 mph acceleration while maintaining factory refinement in normal driving conditions.

The bespoke, heavily fortified version of the Tremec TR-9080 8-speed dual-clutch transmission for the 1,200+ hp Hennessey C8 Corvette 'H850' and 'ST1200' packages. The standard transmission is completely disassembled and rebuilt with Hennessey-specification hardened internals, including billet steel input and output shafts, reinforced clutch packs with increased clamp load, and upgraded mechatronic units to handle the immense hydraulic pressure required. A massive, custom-fabricated transmission cooler with a high-flow pump and dedicated radiator is installed to combat the extreme thermal loads generated during full-power launches and high-speed runs. The transmission control unit is completely recalibrated with Hennessey's proprietary software, enabling faster, firmer shifts and optimizing launch control strategies for sub-2.5-second 0-60 mph sprints while maintaining streetable drivability.

The workhorse automatic transmission used in high-horsepower SUV and truck applications like the VelociRaptor and Goliath trucks, taken far beyond its factory limits. The standard GM 6L90 transmission is stripped down and rebuilt with a performance valve body, high-energy Raybestos clutch plates, and a billet intermediate shaft. The torque converter is replaced with a custom-built, high-stall unit from Precision Industries or Circle D, featuring a billet front cover and reinforced internals to handle the shock of launches with 700+ lb-ft of torque. The transmission's thermal capacity is drastically increased with an auxiliary deep-pan and a large, engine-coolant-fed transmission cooler. The TCM is tuned to provide firmer, faster shifts and to manage the aggressive torque converter lock-up strategy necessary for putting down massive power without slippage.

The fortified manual transmission solution for high-horsepower muscle cars like the 1,000+ hp Exorcist Camaro. While the Tremec TR-6060 is already a robust unit, Hennessey performs critical upgrades to ensure it survives behind a supercharged V8 producing over 1,000 hp. This includes installing a billet steel shift fork, a heavy-duty clutch release system, and often replacing the factory synchros with carbon-lined units for more positive engagement at high RPM. The transmission is typically paired with a twin-disc, cerametallic clutch from manufacturers like McLeod or SPEC, which provides the necessary clamp load while managing heat and maintaining a manageable pedal effort. The driveline is completed with a one-piece carbon fiber or heavy-duty aluminum driveshaft and upgraded rear axle components to handle the shock loads from aggressive launches and power shifts.

The heavily modified version of the Ford-GM co-developed 10R80 10-speed automatic, used in applications like the 1,000+ hp HPE1000 Mustangs and F-150s. To handle the extreme power, the transmission undergoes a complete 'Stage 3' rebuild. This includes a billet input shaft, upgraded CDF drum (a known failure point), reinforced planetary gearsets, and a performance calibration for the transmission control module that maximizes line pressure and optimizes shift points for both drag strip and street performance. The factory torque converter is swapped for a custom 2400-2600 RPM stall speed unit with a billet cover and upgraded bearings. A mandatory auxiliary transmission cooler is integrated into the vehicle's front-end cooling stack to prevent fluid overheating during repeated full-throttle pulls, ensuring consistent performance and longevity under extreme duress.

The bespoke, ultra-lightweight transmission designed specifically for the 1,817 hp Hennessey Venom F5 hypercar. Developed in partnership with CIMA, this is a 7-speed automated manual transmission (AMT) that utilizes a robust single-clutch design rather than a heavier dual-clutch unit. The entire casing and many internal components are crafted from 3D-printed titanium and Inconel to minimize weight while withstanding the tremendous forces of the 'Fury' twin-turbo V8. The shift mechanism is purely pneumatic, allowing for shift times under 100 milliseconds. The transmission is a structural element of the carbon fiber monocoque, contributing to overall chassis rigidity. It is engineered to handle in excess of 1,350 Nm of torque and is calibrated to deliver both smooth, seamless shifts in 'Sport' mode for road use and instantaneous, jarringly fast shifts in 'Track' and 'F5' modes for maximum acceleration, targeting a 0-250-0 mph time of under 30 seconds.

Founded in 1991 by John Hennessey as Hennessey Performance Engineering and headquartered in Sealy, Texas, the company began as a tuning specialist for the Dodge Viper before expanding to domestic muscle car performance. HPE built a reputation transforming Ford GTs, Cadillac CTS-Vs, Chevrolet Camaro ZL1s, and Dodge Challenger Demons, with famous packages like the HPE1000 delivering four-digit horsepower through twin-turbo conversions and supercharger installations. Truck enthusiasts know Hennessey for VelociRaptor Ford conversions and Mammoth RAM builds, while the Exorcist Camaro ZL1 became legendary for embarrassing supercars. The 2010 Venom GT project—based on the Lotus Exige—marked Hennessey's evolution from tuner to hypercar manufacturer, pursuing speed records with a 270 mph run at Kennedy Space Center. The clean-sheet Venom F5 design unveiled in 2021 represents the company's ultimate ambition, featuring the bespoke Fury engine developed entirely in-house with an audacious 300 mph goal. Hennessey embodies Texas performance heritage and American muscle tradition, leveraging decades of tuning expertise to become an independent automotive company producing small-batch hypercars where performance focus is absolute—proving that a tuning shop with engineering excellence and relentless ambition can compete with established manufacturers in the rarefied hypercar stratosphere.