07/26/2024 | Press release | Distributed by Public on 07/26/2024 05:50
The King of the Hill returns
2024-07-26
DETROIT - Chevrolet has unleashed the unthinkable in the Corvette ZR1. The King of the Hill returns with the most powerful V8 ever produced in America from an auto manufacturer, mind-bending specs and iconic design to challenge the world's best supercars in both coupe and convertible variants.
"The team that revolutionized Corvette with a mid-engine architecture took on another challenge: take ZR1 to the next level," said Scott Bell, vice president, Chevrolet. "Corvette ZR1 is about pushing the envelope with raw power and cutting-edge innovation. From Stingray, to Z06, E-Ray, and now ZR1, the Corvette family continues to elevate with each new iteration - and challenge the best in the world."
Pushing the boundaries of Engine Development
ZR1's 5.5L LT7 twin-turbocharged DOHC V8 engine starts with the same architecture as Z06's LT6, the most powerful naturally aspirated production V8 engine ever, and takes it to the next level with twin turbochargers - the first time ever for a factory Corvette.
Dubbed the "Gemini V8" architecture, the LT6 program was only the beginning as engineers dual-pathed a goal: to create massive power, capability and character from naturally aspirated and turbocharged flat plane crankshaft twin engines. With these goals in mind, engineers did not create an LT6 with turbochargers, but instead changed and optimized virtually every system for a boosted application.
Corvette ZR1's 5.5L, twin-turbo DOHC flat-plane crank LT7 engine is the result of engineering prowess and pushing the boundaries of what the engine architecture can do. Thoughtful planning produced the best performance from forced induction, married with the 5.5L flat-plane engine architecture.
Unique to the 5.5L LT7 twin-turbo V8:
The LT7 engine also builds upon this engine architecture with:
To support the dramatic increase in power from the LT7 engine, engineers made numerous changes to the Corvette ZR1's eight-speed dual-clutch transmission, including:
The LT7 engine is purpose-built to accomplish its four-figure horsepower mission with no compromises in componentry and maintains the rev-happy character that is the heart of the Gemini V8 engine family. It will be hand-assembled by the master engine builders at the Performance Build Center, part of the Bowling Green Assembly Plant in Kentucky.
Enabling speed with ease
Purposeful aerodynamics provide the most downforce ever from a Corvette with over 1,200 pounds at top speed.
The Corvette ZR1 offers speed on tap like no Corvette before it. Two distinct setups, complete with Magnetic Ride dampers, accomplish this. The standard Corvette ZR1 chassis arrives with a sleeker body with lower drag and a small spoiler with customer-adjustable short and tall wickers. It also includes a standard carbon-fiber front splitter, rocker moldings, side intake with integrated brake cooling, and front underwing with stall gurney deflectors. Michelin Pilot Sport 4S tires wrap 20-inch front, and 21-inch rear wheels. The standard chassis blends the best of on-road comfort and track capability with this setup.
Corvette ZR1 dispatches the world's toughest tracks with ease, not only with the power from the 5.5L LT7 engine, but also due to additional, specific aerodynamic and cooling changes found throughout the car. These include:
Corvette ZR1's optional ZTK performance package unlocks a true track weapon. Notably, the ZTK package adds an aggressive, high-downforce rear wing, front dive planes, and a tall hood Gurney lip - all constructed from woven carbon fiber. Underneath, underbody strakes replace the standard front underwing stall Gurney to increase front downforce. The suspension tuning included in the ZTK package incorporates stiffer springs and adds Michelin Pilot Sport Cup 2 R tires. Amid testing and development, the ZR1 tackled some the world's most demanding racetracks, including the Nürburgring, Road Atlanta, and Virginia International Raceway.
Carbon Aero, featuring all aerodynamic equipment from the ZTK package, is available on the standard ZR1 chassis as well.
"We went into the ZR1 program with lofty goals, but even our first development tests on-track showed the teams were already exceeding them," said Tadge Juechter, executive chief engineer, Corvette. "As we worked to develop this car, we continued to leap past expectations, and we knew we had a special Corvette on our hands."
Controlling ZR1's high performance is a new brake system. The brake package uses a revolutionary carbon ceramic rotor manufacturing technology to yield increased durability and reduced brake component temperatures. Front rotors measure 15.7 inches (400mm) in diameter and rear rotors 15.4 inches (390mm) in diameter - the front rotors are the largest ever equipped on Corvette. In just 24.5 seconds, the Corvette ZR1 goes from 80-200 mph and back to 80 mph - 22% quicker than the C7 Corvette ZR1, and 53% quicker than the C6 Corvette ZR1.
Designed for the split window's return
For ZR1, function and form quickly took hold to create an instant icon - an icon worthy of the historic split window's return.
"We didn't approach this decision lightly, we know this is a beloved element from Corvette's history," said Phil Zak, executive design director, Chevrolet. "Not only does this element provide function, but we were able to integrate passionate design into the form and do it in a way that paid homage to Corvette's history. ZR1 felt like the right time to bring the split-window back."
Last seen on the C2-generation Corvette, and quietly previewed on the Corvette Z06 GT3.R race car, the split-window style capitalizes on the design statement that is Corvette ZR1. While serving as a statement piece, this carbon fiber "spine" between the two rear windows, available in exposed weave or body color, provides increased heat extraction from the engine compartment, working in parallel with numerous other cooling elements throughout ZR1.
The teams worked to elevate the striking design first revealed with the eighth-generation Corvette Stingray and accentuate lines that evoke the car's sense of motion - but the design's function also helps it perform. Teams looked at every component of Corvette ZR1 to ensure cooling and aerodynamics remained top of mind, and any change accomplished the car's mission: performance.
Additional changes include:
The Corvette ZR1's cockpit dials up the attention to detail, notably with unique ZR1 badging found on an interior plaque, the sill plates and steering wheel. A new finishing stitch pattern for the doors, specific to ZR1, is available on the 3LZ trim. A boost gauge is also present, denoting the first factory turbocharged Corvette in the nameplate's history.
Providing further choice to customers, the Corvette ZR1 will provide a roster of customization between exterior and interior colors. Shared with the 2025 Corvette lineup, new colors such as Competition Yellow, Hysteria Purple and Sebring Orange headline updates. The latter recalls a fan-favorite hue from the previous C7-generation Corvette ZR1.
Inside, a new Habanero interior is available, as is a Blue Stitch option. Various full-length racing stripes, brake caliper colors, including an exclusive blue for the calipers, seat belt colors and more will also be available.
King of the Hill coming next year
Corvette ZR1 will enter production in 2025 and will be built at General Motors' Bowling Green Assembly Plant in Kentucky. It joins Corvette Stingray, Corvette Z06 and Corvette E-Ray to continue elevating the Corvette family. Further details on price and availability will be shared closer to production.
Cross flags closers:
ABOUT CHEVROLET
Founded in 1911 in Detroit, Chevrolet is now one of the world's largest car brands. Chevrolet models include electric and fuel-efficient vehicles that feature engaging performance, design that makes the heart beat, passive and active safety features and easy-to-use technology, all at a value. More information on Chevrolet models can be found at www.chevrolet.com.
1On a closed course. Based on initial vehicle movement.
CHEVROLET CORVETTE ZR1 SPECIFICATIONS
ENGINE
Type: |
LT7 Twin-Turbocharged 5.5L DOHC VVT DI |
Bore & stroke (in. / mm): |
4.104 x 3.150 / 104.25 x 80 |
Block Material: |
A319 cast aluminum with cast-in iron cylinder liners and four-bolt main bearing caps |
Oiling System: |
Seven-stage dry sump (8-qt. capacity) with oil-spray piston cooling |
Oil Type: |
Dexos R 5W50 synthetic |
Cylinder Head Material: |
A356 T6 cast aluminum |
Combustion Chamber Volume: |
59.92cc |
Compression Ratio: |
9.8:1 |
Valvetrain: |
Dual overhead camshafts (four valves per cylinder) with mechanical finger-follower valvetrain and dual-coil valve springs; dual-independent camshaft phasing |
Valve Size (in. / mm): |
1.77 / 45 titanium (intake) & 1.37 / 35 sodium filled Nimonic (exhaust) |
Fuel Delivery: |
PDI (DI - Max pressure: 5,076 psi (35 Mpa / 350 bar) & Port Fuel Injection) |
Firing Order: |
1-4-3-8-7-6-5-2 |
Throttle Body: |
Twin 65mm single bore (electronic) |
Charging: |
Twin 76 mono-scroll ported shroud ball bearing turbos (67mm MAR compressor), E-Waste gates |
Charge Cooling: |
Dual engine-mounted water to air charge coolers |
ECU: |
GM E68 (32-bit processing) |
Horsepower (hp / kW): |
1,064 / 873 @ 7,000 rpm |
Torque (lb.-ft. / Nm): |
828 / 1123 @ 6,000 rpm |
TRANSMISSION & AXLE
Type: |
M1K 8-speed dual clutch (DCT) |
CHASSIS & SUSPENSION
Front Suspension: |
Short/long arm (SLA) double wishbone, forged aluminum upper and cast aluminum L-shape lower control arms; monotube shock absorbers; Magnetic Selective Ride Control 4.0. Specific calibration with available ZTK package. Adjustable front lift with memory is available |
Rear Suspension: |
Short/long arm (SLA) double wishbone, forged aluminum upper and cast aluminum L-shape lower control arms; direct-acting stabilizer bar; monotube shock absorbers; Magnetic Selective Ride Control 4.0. Specific calibration with available ZTK package |
Steering Type: |
Variable-ratio rack-and-pinion with electric power assist; includes Active Steer Stops |
Steering ratio: |
15.7:1 |
Turning Circle (ft. / m): |
38 / 11.1 |
Brake Type: |
Front and rear eBoost-assisted carbon ceramic discs with six-piston/monobloc front calipers and four-piston/monobloc rear calipers |
Brake Rotor Size (in. / mm): |
Front: 15.7 x 1.5 / 400 x 38 |
Wheel Size: |
Front: 20-inch x 10-inch (w/5 x 120mm bolt pattern) |
Tire Size: |
Front: 275/30ZR20 |
EXTERIOR DIMENSIONS
Wheelbase (in. / mm): |
107 / 2723 |
Overall Length (in. / mm): |
185.9 / 4722 |
Overall Width without mirrors (in. / mm): |
79.7 / 2025 |
Overall Height (in. / mm): |
48.6 / 1234 |
Track (in. / mm): |
Front: 66.3 / 1685 |
INTERIOR DIMENSIONS
Headroom (in. / mm): |
37.9 / 963 |
Legroom (in. / mm): |
42.8 / 1087 |
Shoulder Room (in. / mm): |
54.4 / 1382 |
Hip Room (in. / mm): |
52 / 1321 |
WEIGHTS & CAPACITIES
Dry Weight (lb. / kg): |
3670 / 1665 (coupe) |
Cargo Volume (cu. ft. / L)1: |
9.1 / 258 |
1Cargo and load capacity limited by weight and distribution.
FUEL TANK CAPACITY (approx.)