For nearly a quarter century, Corvette Racing operated according to a familiar and enormously successful formula. Chevrolet developed purpose-built racing Corvettes with Pratt Miller Engineering, surrounded those cars with some of the best engineers and drivers in sports-car racing, and then took them to Daytona, Sebring, Le Mans and virtually every other important endurance venue on the planet. The C5-R, C6.R, C7.R and eventually the mid-engine C8.R accumulated victories, championships and class wins while establishing Corvette as one of the most successful and recognizable names in modern GT racing.

The Corvette Z06 GT3.R represented something fundamentally different. Instead of building a racing Corvette primarily around Chevrolet’s own factory effort, the new program was conceived from the outset as a true customer-racing platform—one that could be purchased, campaigned and supported by independent teams anywhere in the world. It was Corvette’s entrance into the global GT3 marketplace and, perhaps more significantly, the beginning of a customer-racing program unlike anything Chevrolet had previously attempted with the modern Corvette.

Chevrolet publicly unveiled the Z06 GT3.R at Daytona International Speedway on January 27, 2023, almost exactly one year before its planned competition debut in the 2024 Rolex 24 at Daytona. It was the first Corvette race car designed from the beginning to comply fully with the FIA’s international GT3 technical regulations, making it eligible for championships ranging from IMSA and the FIA World Endurance Championship to the various SRO-sanctioned GT World Challenge series around the world.

Although the car carries Chevrolet badges, its creation continued one of the longest and most productive technical partnerships in American motorsports. General Motors Competition Motorsports Engineering worked directly with Pratt Miller Engineering on the design and development of the GT3.R, with Pratt Miller serving as the car’s constructor and assuming responsibility for chassis preparation, assembly, development, and much of the competition engineering. Chevrolet and General Motors remained deeply involved through propulsion development, simulation, aerodynamic work, design, and building the customer-support structure needed once the cars began entering competition worldwide.

That partnership was hardly new. Pratt Miller had already spent decades developing and operating Corvette’s factory racers, but the GT3.R changed the scope of the assignment. The company was no longer simply building race cars for the team charged with representing Chevrolet at the factory level. It now had to build cars that would perform for a wide variety of customers across different continents, under different sanctioning bodies, and with drivers ranging from seasoned professionals to Bronze-rated gentlemen competitors. In that respect, the GT3.R had to be more than fast. It had to be adaptable, serviceable, supportable, and durable.

A Race Car That Really Begins as a Corvette

One of the most interesting aspects of the Z06 GT3.R is just how direct its relationship is with the production C8 Corvette. Every GT3.R begins with an aluminum chassis originating from Chevrolet’s Bowling Green Assembly Plant, the same facility responsible for production Corvettes. From there, the structure is transported to Pratt Miller in Michigan, where the car is transformed into a full competition machine with a purpose-built steel roll cage, racing suspension, safety systems, bodywork and all of the equipment required for international GT3 competition.

The suspension retains the production Corvette’s basic double-wishbone architecture at both ends, although virtually every meaningful detail is optimized for racing. Springs, dampers, geometry adjustment and related hardware are all designed to provide the range of setup required for everything from tight street circuits to high-speed endurance venues. As with any GT3 car, the challenge is not merely producing maximum mechanical grip, but giving teams enough adjustability to work within the constantly changing Balance of Performance environment that defines the category.

Aerodynamically, Chevrolet Motorsports engineers worked closely with GM Design to preserve the production Z06’s recognizable shape while delivering the downforce, cooling, and stability modern GT racing demands. Carbon-fiber bodywork, a large rear wing, an aggressive front splitter, and a competition-specific underbody diffuser separate the GT3.R from the road car, but the silhouette remains unmistakably Corvette. Even the large side openings ahead of the rear wheels trace directly back to the production Z06, where they serve as part of the cooling strategy for the mid-engine layout.

The engine creates an even stronger connection between road car and race car. Mounted behind the driver is a 5.5-liter naturally aspirated DOHC V-8 using the same flat-plane-crank architecture found in the production Z06’s LT6. In fact, development of this engine family began in competition with the C8.R before the production Z06 reached customers, making the relationship between the street and racing programs unusually circular. Racing informed the road car, and the road car then became the foundation for the next generation of racing Corvette.

The GT3.R engine originates from Chevrolet’s Performance Build Center in Bowling Green, the same facility responsible for production Z06 engines, and shares more than 70 percent of its components with the street-going LT6. Among the common pieces are the crankshaft, connecting rods, cylinder heads, fuel injectors, ignition coils, gaskets and numerous sensors. Racing versions are then prepared with competition-specific components and calibrations appropriate for GT3 use.

Under Balance of Performance regulations, output varies according to the series, event and sanctioning body, but the engine generally operates in the 500-to-600-horsepower range. Power is sent through an Xtrac six-speed sequential transaxle, while Bosch motorsport electronics and ABS, AP Racing brake components, 18-inch racing wheels and a competition-specific suspension complete the basic package. Different endurance, lighting, telemetry, cooling and safety configurations allow customers to tailor the same basic platform for IMSA, WEC, SRO and other championships.

That flexibility is central to understanding what Chevrolet and Pratt Miller were trying to accomplish. GT3 racing is not about creating a car specifically for one championship. It is about producing a platform that can be shipped virtually anywhere, adapted to local regulations and put into competition against the best customer racing cars built by Porsche, Ferrari, BMW, Mercedes-AMG, Aston Martin, Lamborghini, McLaren, Ford and others.

The Z06 gT3.R Corvette’s First Season: Learning in Public

The Z06 GT3.R made its competition debut at the 2024 Rolex 24 at Daytona. Corvette Racing by Pratt Miller Motorsports entered two cars in IMSA’s GTD PRO category, while Canadian team AWA became the first true customer operation to receive GT3.Rs and entered two additional cars in GTD. AWA’s early driver roster included Orey Fidani, Matt Bell and Lars Kern in one entry, while Anthony Mantella and Corvette factory driver Nico Varrone were among those associated with the second.

For Pratt Miller, the familiar yellow Nos. 3 and 4 Corvettes remained the center of the North American program. Antonio Garcia and Alexander Sims formed the primary pairing in the No. 3, while Tommy Milner and Nicky Catsburg shared the No. 4, with additional factory drivers rotating through the endurance events. The speed of the new car was apparent almost immediately, but so were the growing pains. Reliability and durability were not yet where Chevrolet and Pratt Miller wanted them to be, and the first season became as much about learning how the GT3.R behaved over long races as it was about collecting trophies.

That was not entirely unexpected. Unlike the mature C8.R, the GT3.R was a brand-new platform being operated simultaneously by factory-supported and customer teams, and every race generated more information about cooling, electronics, driveline durability, setup windows and serviceability. AWA would later characterize much of 2024 as a season devoted to improving reliability and learning the car. Even so, the GT3.R began proving its potential well before that first year was complete.

The breakthrough came from outside traditional Corvette Racing. DXDT Racing introduced the GT3.R to GT World Challenge America in spring 2024, and its No. 63 Corvette, driven by Tommy Milner and Alec Udell, won at Circuit of the Americas on May 18, giving the car its first victory anywhere in the world. What followed was remarkable. Milner and Udell won their first eight GT World Challenge America races together, setting a Pro-class record for consecutive victories and quickly showing the new Corvette could compete in sprint-oriented GT racing as well as endurance competition. Despite missing the opening portion of the championship, they ultimately finished second in the Pro standings, while DXDT’s second Corvette also collected Pro-Am victories with Bryan Sellers and Bryson Morris.

The first IMSA victory came two months later at Canadian Tire Motorsport Park, where Garcia and Sims controlled the GTD PRO race in the No. 3 Corvette and led Milner and Catsburg home in the No. 4. The result gave Chevrolet a Corvette 1-2 and provided further confirmation that the car’s early developmental problems were beginning to give way to repeatable race-winning performance.

Taking Corvette Racing International

At the same time, TF Sport assumed responsibility for Corvette’s FIA World Endurance Championship effort. That arrangement illustrated Chevrolet’s new philosophy perfectly. Rather than operate its own factory WEC organization, Chevrolet supplied the cars, engineering support and technical infrastructure while an experienced independent team handled the day-to-day racing program.

The first season required patience, but TF Sport ended 2024 with meaningful momentum. At the season-ending Eight Hours of Bahrain, the team placed its Corvettes second and third in LMGT3, with the No. 81 of Tom Van Rompuy, Rui Andrade and Charlie Eastwood heading the Corvette contingent. The result did not erase the challenges of the first season, but it showed that the platform was becoming increasingly competitive as the teams and engineers learned how to extract performance from it.

In 2025, the program took another significant step forward. TF Sport won twice, beginning with the season-opening race in Qatar and adding another victory at Fuji. The two Corvettes eventually finished fifth and sixth in the LMGT3 team standings. The driver lineup mixed established Corvette professionals with customer racers and included Ben Keating, Jonny Edgar, Daniel Juncadella, Charlie Eastwood, Rui Andrade and Tom Van Rompuy.

Across the Atlantic, the Z06 GT3.R achieved an equally important milestone. AWA returned to the Rolex 24 in 2025 with Orey Fidani, Matt Bell, Lars Kern, and Marvin Kirchhöfer and won the GTD class. After the frustrations and developmental headaches of the first season, a customer-entered Corvette had captured one of the most prestigious endurance races in North America.

Pratt Miller’s 2025 IMSA campaign proved even more significant. Garcia and Sims won the GTD PRO Drivers Championship in the No. 3 Corvette, Pratt Miller captured the Teams Championship, and Chevrolet secured the GTD PRO Manufacturers Championship. It was the first IMSA GTD PRO championship for the Z06 GT3.R and Chevrolet’s 15th IMSA GT-class manufacturers title. Across the season, the two Pratt Miller cars accumulated nine podium finishes, turning the GT3.R from an ambitious new project into a proven championship-winning platform in only its second season.

The Z06 GT3.R Corvette Goes Global

Other teams were already expanding the car’s footprint. Johor Motorsport Racing brought two Z06 GT3.Rs into GT World Challenge Asia in 2025, and Prince Jefri Ibrahim and Alexander Sims scored the team’s first victory at Sepang in only its second race with the Corvette. Ibrahim added further victories during the season, demonstrating that the car could compete successfully in the heat, humidity and circuit characteristics found across the Asian championship.

By 2026, Corvette’s GT3 customer roster had grown to include Corvette Racing by Pratt Miller Motorsports, TF Sport, 13 Autosport, DXDT Racing, Steller Motorsport, Johor Racing and Chouest Povoledo Racing. The lineup gave Chevrolet representation across North America, Europe and Asia and showed just how far the concept had traveled from the traditional factory-only Corvette Racing model.

Chouest Povoledo Racing carried the Corvette banner in the 2026 GT World Challenge America championship with Ross Chouest and Aaron Povoledo, while the former AWA operation evolved into 13 Autosport with Orey Fidani, Matt Bell and Lars Kern continuing with the platform. Each program approached the car from a slightly different angle, but collectively they provided Chevrolet and Pratt Miller with the breadth of real-world competition experience necessary for a serious global customer-racing operation.

The largest achievements of 2026, however, again came through Pratt Miller and TF Sport. In June, TF Sport delivered one of the defining victories of the entire Z06 GT3.R program when Ben Keating, Nicky Catsburg and Jonny Edgar drove the No. 33 Corvette to victory in the LMGT3 category at the 24 Hours of Le Mans. The win gave Corvette its tenth class victory at Le Mans and carried enormous significance because it was achieved not by the old factory Corvette Racing operation, but by a customer-style program using the very model Chevrolet had created to take Corvette racing around the world.

The No. 33 had started only 17th among 25 LMGT3 entries before working its way into contention over the course of the race. Keating completed the critical Bronze-driver running early, while Catsburg and Edgar took over much of the professional driving load as the event progressed. By the finish, the Corvette had delivered the sort of result Chevrolet envisioned when the GT3.R program was first announced: an internationally homologated customer race car capable of winning the biggest GT race in the world.

The sister Racing Team Turkey by TF Corvette subsequently won at Interlagos, and by late summer Corvette remained heavily involved in the WEC LMGT3 championship fight. At Fuji in September, the No. 34 Corvette finished third and the No. 33 fifth, maintaining the program’s position among the leading contenders in the category.

Back in IMSA, Pratt Miller entered the closing phase of 2026 in another title fight. Garcia and Sims won on the streets of Detroit in May, while Milner and Catsburg built their championship challenge around a season of consistent results. Their No. 4 Corvette finished second after a dramatic late battle with the Ford Mustang GT3 at Indianapolis in September. Heading into the season-ending Petit Le Mans at Road Atlanta, Milner and Catsburg lead the GTD PRO standings by 47 points, giving Corvette an opportunity to add another championship to a résumé that has grown rapidly since the GT3.R first appeared in competition.

A Different Kind of Corvette Racing

The Z06 GT3.R may ultimately be remembered as one of the most consequential racing Corvettes ever built, not simply because of what it has won but because of what Chevrolet designed it to do. Previous generations carried Corvette Racing around the world as a factory program. The GT3.R allows Corvette Racing itself to spread around the world.

A Canadian organization can race one at Daytona. A British team can take one to Le Mans. An American SRO team can win eight consecutive races with one. A Malaysian organization can race Corvettes at Sepang and Fuji. The same basic car can compete in IMSA, WEC, GT World Challenge America and GT World Challenge Asia while receiving engineering and technical support from the same Chevrolet and Pratt Miller organization responsible for its original development.

Beneath all of that racing hardware remains an unusually strong connection to the Corvette customers can actually buy. The aluminum structure begins in Bowling Green. The 5.5-liter flat-plane-crank V-8 shares its architecture, and more than 70 percent of its components, with the production Z06 engine. Its proportions remain unmistakably C8 Corvette. Yet wrapped around those production roots is a racing machine engineered to survive Daytona, Sebring and Le Mans while competing against the best GT3 automobiles produced anywhere in the world.

Its first season exposed the inevitable difficulties that accompany an entirely new racing program. Its second produced a Daytona class victory and an IMSA championship. Its third has already delivered a Le Mans victory and championship fights on both sides of the Atlantic. For Chevrolet and Pratt Miller, the Z06 GT3.R represents the next evolution of a partnership that began more than a quarter century ago. For Corvette, it represents something larger still: the factory team is no longer the only face of Corvette Racing. The program has become global, customer-driven and considerably broader than anything that came before it.