1963 Chevrolet Corvette

To Be OFFERED AT AUCTION at RM Sothebys The Monterey Auction event, 13 - 15 August 2026.
$11,000,000 - $13,000,000 USD

• One of just five legendary Corvette Grand Sports constructed and the first of only three Grand Sport coupes
• One of the most significant factory-built competition Corvettes ever created, engineered as a purpose-built sports-racing prototype with hundreds of unique components different than any production Sting Ray
• Campaigned by Dick Doane to three SCCA class victories during the 1963 season
• Integral part of the Mecom Racing Teams dominant 1963 Bahamas Speed Week effort, including a 2nd in class finish in the prestigious Nassau Trophy
• 2nd in class at the 1964 12 Hours of Sebring and 3rd in class at the 1965 12 Hours of Sebring
• Further raced in SCCA competition and returned to the Bahamas Speed Week in 1964
• Driven in period by some of Americas greatest racing talents, including A.J. Foyt, Jim Hall, Augie Pabst, Dick Thompson, John Cannon, and Delmo Johnson
• Subject of a sympathetic, no-expense-spared restoration during its current 23-year ownership, returning the car to its authentic 1964 Sebring livery
• Awarded two Bloomington Gold certifications and honored by the National Corvette Restorers Society
• Meticulously maintained, expertly sorted, and accompanied by an extensive collection of spare components
• Veteran of the Goodwood Festival of Speed, Rolex Monterey Motorsports Reunion, and Sonoma Motorsports Festival
• Rarer than both the Shelby Cobra Daytona Coupe and Ferrari 250 GTO, representing one of the most coveted American competition cars ever built

DUELING WITH SERPENTS

Few individuals have shaped the history of the Corvette more profoundly than Zora Arkus-Duntov. Arriving at Chevrolet in 1953, the gifted engineer and accomplished racing driver immediately recognized the Corvettes untapped potential. Fresh from class victories at the 24 Hours of Le Mans in 1954 and 1955, Arkus-Duntov envisioned Americas sports car not merely as a stylish road machine, but as a genuine international racing contender capable of challenging Europes finest.

His influence was immediate. He successfully championed the introduction of Chevrolets small-block V-8 into the Corvette for 1955, transforming the models performance overnight. Yet Arkus-Duntovs ambitions reached far beyond production automobiles. Throughout the latter half of the 1950s he quietly developed increasingly sophisticated competition machines including the SR1, SR2, and Corvette SS each serving as another step toward the ultimate expression of Corvette performance.

Achieving those goals required perseverance. General Motors official withdrawal from factory racing, coupled with resistance from influential executives including Bill Mitchell, forced Arkus-Duntov to pursue many of his projects with limited corporate support. Nevertheless, his conviction never wavered: Given the proper engineering and development, the Corvette possessed every ingredient necessary to defeat the worlds best sports cars.

The arrival of the all-new Sting Ray for 1963 provided the ideal foundation. Dramatically restyled and available for the first time as the now-iconic split-window coupe, the new Corvette represented a major leap forward in both engineering and design. At the pinnacle of the production lineup stood the Z06 performance package, created specifically to challenge Carroll Shelbys increasingly formidable Cobra.

The Z06 proved capable, but its success was short-lived. Shelbys lighter, more powerful Cobra quickly exposed the Corvettes greatest weakness: weight. Arkus-Duntov understood that incremental improvements would never be enough. If Chevrolet intended to beat Shelby on equal terms, an entirely different approach would be required. With the quiet encouragement of Chevrolet General Manager S.E. Bunkie Knudsen, Arkus-Duntov embarked upon one of the boldest engineering exercises in American motorsport history: the creation of an uncompromising lightweight Corvette built expressly for international competition.

The resulting Grand Sport bore only a passing resemblance to the production Sting Ray. Although its silhouette remained unmistakably Corvette, virtually every component was redesigned with competition as its sole purpose. In reality, the Grand Sport was less a modified production car than a purpose-built sports-racing prototype disguised as one. Only five chassis were ultimately constructed.

Their engineering was extraordinary. The conventional production frame gave way to a lightweight tubular structure fabricated from seamless thin-wall steel, complemented by hand-formed aluminum cockpit bracing. Weight reduction became an obsession. Aluminum replaced steel wherever possible, while even seemingly insignificant components including door hardware, hood hinges, steering components, differential housing, instrument housings, and windshield wiper mechanisms were painstakingly redesigned using lightweight alloys. Magnesium was employed for specialized carburetor adapters, while custom steel forgings substituted for heavier production pieces where aluminum proved impractical.

The suspension and braking systems were equally advanced. Girling disc brakes with aluminum calipers, reinforced suspension components, lightweight radius arms, aluminum differential housing, relocated fuel tank, and competition-tuned chassis geometry transformed the Corvette into an altogether different machine.

Above this remarkable chassis rested perhaps the Grand Sports most distinctive feature: an ultra-lightweight fiberglass body unlike any production Corvette. Hand-laid as a single-piece shell, the body featured thinner panels, broader fenders, revised aerodynamics, fixed headlamps, Plexiglas side and rear windows, and numerous subtle refinements born directly from competition. Every curve, vent, and contour reflected a singular purpose speed.

Halibrand magnesium knock-off wheels completed the package, while an FIA-compliant luggage compartment with spare tire underscored the cars international racing ambitions. Inside, the cockpit remained purposeful and functional, stripped of unnecessary luxury while retaining the familiar Corvette driving position.

The results were astonishing. Where a standard 1963 Corvette weighed approximately 3,200 pounds, the Grand Sport tipped the scales at roughly 1,900 pounds an extraordinary reduction that fundamentally transformed the cars performance. Combined with enormous V-8 power, sophisticated chassis engineering, and relentless attention to detail, Arkus-Duntov had created precisely what he had envisioned: a Corvette capable of confronting and defeating the Shelby Cobra.

It was one of the most ambitious engineering projects ever undertaken by General Motors, and one that would become the stuff of American motorsport legend.

GRAND SPORT EMERGES

Although whispers of Arkus-Duntovs clandestine lightweight Corvette project occasionally surfaced within racing circles, Chevrolet maintained complete silence until late 1962. During private testing at Sebring in preparation for the upcoming 12 Hours, the extraordinary performance of the new Grand Sport prototypes attracted considerable attention from journalists and competitors alike. The resulting publicity forced General Motors into an uncomfortable spotlight.

GM Chairman Frederic Donner was furious. The corporation had officially withdrawn from organized racing years earlier, and news that Chevrolet engineers had quietly developed an uncompromising factory-built racing Corvette directly contradicted corporate policy. Donner swiftly ordered the Lightweight program terminated, effectively ending Chevrolets official involvement before the Grand Sport ever turned a competitive wheel on the international stage.

For most projects, that would have been the end. For Zora Arkus-Duntov, it became merely another obstacle. Determined to see his creation fulfill its potential, he continued developing the five Grand Sports through unofficial channels, envisioning them as weapons for carefully selected private teams. Chassis 003 the car offered here and its sister chassis 004 became the first completed coupes and were quietly loaned to trusted racers to begin development under actual competition conditions.

Chassis 003 was entrusted to Dick Doane, proprietor of Doane Chevrolet in Dundee, Illinois, a dealership proudly known in period advertising as the Worlds Best Known Corvette Dealer. Because the Grand Sport fell outside normal production specifications, it competed in SCCA C-Modified rather than a production-based class.

Arkus-Duntov deliberately chose reliability over outright power during these early outings, fitting the first Grand Sports with proven iron-block 327-cubic-inch V-8 engines while engineers gathered invaluable data.

The strategy proved successful. Between July and November 1963, Doane campaigned chassis 003 in eight SCCA events, earning class victories at Wilmot and Greenwood while steadily refining the revolutionary new Corvette. At Road America, he famously led the prestigious Road America 500 outright for an astonishing 93 laps before engine failure ended an otherwise remarkable performance.

One impromptu modification during that race would become part of Grand Sport legend. Concerned by rising temperatures, Doane simply punched eight cool