Superformance 1963 Corvette Grand Sport LS9 6-Speed
Presentation
Built as a GM-authorized continuation of Zora Arkus-Duntov’s legendary 1963 Corvette Grand Sport race car, this Superformance Corvette Grand Sport is finished in blue with a period-style livery and powered by a supercharged 6.2-liter LS9 V8 engine paired with a Tremec T56 6-speed manual transmission. Built on a purpose-designed tubular steel chassis, it comes equipped with a dry-sump oiling system, custom ceramic-coated headers, stainless steel side-exit exhaust pipes, Vintage Air climate control, power windows and door locks, a tilt-adjustable steering column, Wilwood four-wheel disc brakes, power rack-and-pinion steering, adjustable front coilovers, an external differential cooler, and staggered American Racing wheels. Acquired by the current owner in 2026, this Superformance Grand Sport is now being offered for auction in Pennsylvania with approximately 2k miles showing on the odometer.
Conceived as a tribute to the original Corvette Grand Sport competition cars developed under the direction of Chevrolet chief engineer Zora Arkus-Duntov, this Superformance Grand Sport faithfully recreates the appearance of the rare factory racers. This example is finished in blue with a white center stripe outlined in red and features #2 roundels on the hood, doors, and rear deck. The hand-laminated fiberglass body is mounted to a 4” tubular steel chassis and incorporates signature Grand Sport styling cues, including a vented hood, vented front fenders, headlamp covers, rear fender flare extensions, bullet-style mirrors, and an externally mounted rear differential cooler. Staggered 17” front and 18” rear American Racing Shelby Cobra-style wheels are mounted with Nitto NT555 tires measuring 255/50 and 305/40, respectively.
The cockpit is trimmed in black leather upholstery with matching door panels and carpeting. Amenities include bucket seats, a Vintage Air climate control system, power windows, power door locks, Dynamat sound insulation in the rear cabin area, a custom center-mounted switch panel, an analog clock, a cockpit-mounted fire extinguisher, and a GT-style steering wheel mounted on a tilt-adjustable column. A battery disconnect switch is located in the trunk.
Installed in 2018, the supercharged 6.2-liter LS9 V8 features a track-oriented dry-sump lubrication system and a custom EVAP breather setup. Factory-rated at 638 HP in the C6 Corvette ZR1, the LS9 is reported to produce approximately 635 HP in this application. Power is sent to the rear wheels through a Tremec T56 6-speed manual transmission and custom stainless-steel side-exit exhaust pipes fed by ceramic-coated headers. The suspension consists of tubular control arms with adjustable front coilovers, while the rear utilizes a C2 Corvette-style three-link arrangement with a transverse leaf spring and Bilstein dampers. Braking is handled by power-assisted Wilwood four-wheel disc brakes.
This sale will include a clean Pennsylvania title listing the car as a 1963 Chevrolet.
The seller would like you to know: “Corvette Grand Sport CGS0031 is one of the most exclusive sports cars on the road, and the story behind the limited series of Chevrolet road racers is simply incredible. In late 1962, Chevrolet chief engineer Zora Arkus Duntov planned to build a production run of 125 purpose-built Corvette racecars to compete in the GT class at Le Mans. The Chevrolet marketing department christened the sports car the "Grand Sport." After a test run of just five cars, GM cancelled the project and ordered them destroyed. Duntov hid the first two while Texans Alan Sevadjian, Delmo Johnson, and Jim Hall purchased the other three. Johnson piloted a Grand Sport in the 1965 Sebring race. You can own an authentic continuation version authorized and approved by GM of the spectacular Grand Sport racecar. Superformance CGS0031 is painted in a brilliant blue with period correct white pinstripes and #2 roundels, giving the sports car a high level of authenticity. Powered by a Chevy LS9 small block churning out 635HP, the V8 engine is mated to a Tremec T56 6-speed transmission. The LS9 features a track-ready dry sump setup along with a custom evap breather system. The car features a gorgeous black leather touring interior with air conditioning, power door locks, tilt steering wheel and power windows. Other options include 18 and 17-inch wheels, Nitto tires, and stainless-steel side pipes with custom ceramic-coated headers. CGS0031 is titled as a 1963 Chevrolet.”
The seller would like you to know: “Corvette Grand Sport CGS0031 is one of the most exclusive sports cars on the road, and the story behind the limited series of Chevrolet road racers is simply incredible. In late 1962, Chevrolet chief engineer Zora Arkus Duntov planned to build a production run of 125 purpose-built Corvette racecars to compete in the GT class at Le Mans. The Chevrolet marketing department christened the sports car the "Grand Sport." After a test run of just five cars, GM cancelled the project and ordered them destroyed. Duntov hid the first two while Texans Alan Sevadjian, Delmo Johnson, and Jim Hall purchased the other three. Johnson piloted a Grand Sport in the 1965 Sebring race. You can own an authentic continuation version authorized and approved by GM of the spectacular Grand Sport racecar. Superformance CGS0031 is painted in a brilliant blue with period correct white pinstripes and #2 roundels, giving the sports car a high level of authenticity. Powered by a Chevy LS9 small block churning out 635HP, the V8 engine is mated to a Tremec T56 6-speed transmission. The LS9 features a track-ready dry sump setup along with a custom evap breather system. The car features a gorgeous black leather touring interior with air conditioning, power door locks, tilt steering wheel and power windows. Other options include 18 and 17-inch wheels, Nitto tires, and stainless-steel side pipes with custom ceramic-coated headers. CGS0031 is titled as a 1963 Chevrolet.”
Bids & Comments
Fordham
Jul 2, 2026 · 18:44
Bid in the amount of $137,500
Johnbugg
Jul 2, 2026 · 18:43
Bid in the amount of $135,000
Fordham
Jul 2, 2026 · 18:42
Bid in the amount of $127,500
Johnbugg
Jul 2, 2026 · 18:42
Bid in the amount of $125,000
Fordham
Jul 2, 2026 · 18:41
Bid in the amount of $117,500
Johnbugg
Jul 2, 2026 · 18:40
Bid in the amount of $115,000
Fordham
Jul 2, 2026 · 18:39
Bid in the amount of $112,000
Johnbugg
Jul 2, 2026 · 18:38
Bid in the amount of $110,000
Carmadillo
Jul 2, 2026 · 17:49
Bid in the amount of $95,000
Fordham
Jul 2, 2026 · 16:57
Bid in the amount of $85,000
Pilatus
Jul 2, 2026 · 16:43
Bid in the amount of $82,000
Fordham
Jul 2, 2026 · 16:35
Bid in the amount of $79,000
Pilatus
Jul 2, 2026 · 15:25
Bid in the amount of $75,000
Johnbugg
Bid
Jul 2, 2026 · 10:53
Bid in the amount of $150,000
Johnbugg
Jul 2, 2026 · 00:36
Offer in the amount of $150,000
cadamson7
Jul 1, 2026 · 18:59
Bid in the amount of $26,000
hotrodgrrrl
Jul 1, 2026 · 15:48
Bid in the amount of $50,000
Fordham
Jul 1, 2026 · 15:18
Bid in the amount of $70,000
CCCWC
Jul 1, 2026 · 13:28
Thanks to everyone bidding and following along so far. We’re actively engaged in the auction, answering questions, and following along closely as we head toward the close. Good luck to all bidders — excited to see where it lands!
CCCWC
Jul 1, 2026 · 13:16
Dry Sump Video: https://www.youtube.com/watch?v=6dVBffMD508
Exhaust Video: https://www.youtube.com/watch?v=cUBB7Q4QW0c
Exhaust Video: https://www.youtube.com/watch?v=cUBB7Q4QW0c
CCCWC
Jul 1, 2026 · 13:12
Welcome to our auction and thanks for checking out this beautiful Superformance Corvette Coupe. This is an exceptionally well-kept example with outstanding fit, finish, and presentation throughout. We’re happy to answer any questions during the auction. Thank you from all of us at County Corvette in West Chester, PA!
charris
Jul 1, 2026 · 12:27
Bid in the amount of $25,000
RedArcadia
Jul 1, 2026 · 11:47
Good Lord ... looks like a cartoon. Love it.
cadamson7
Jul 1, 2026 · 10:40
Bid in the amount of $55,000
Pilatus
Jul 1, 2026 · 10:28
Bid in the amount of $65,000
CarmelTap
Jul 1, 2026 · 03:55
Bid in the amount of $62,000
KERRYKOHN
Jul 1, 2026 · 01:27
Bid in the amount of $26,250
Bullettooth81
Jul 1, 2026 · 01:14
Bid in the amount of $56,250
Johnbugg
Jul 1, 2026 · 01:08
You guys did a great job , nice car !
Pilatus
Jul 1, 2026 · 01:03
Bid in the amount of $58,000
Sign In to Comment
Please sign in or create an account to join the auction discussion.