Fully 50 percent of the '10 Corvettes purchased were Grand Sports, and the number is likely to be comparable for the '11 model. Most of these new owners pamper their cars with frequent cleaning and do their best to keep the mileage low. That makes sense, since one of the first things a prospective used-Corvette buyer looks at is mileage. The more clicks on the odometer, the lower the value of the car.
Callaway Cars (www.callawaycars.com) decided to test this theory when it purchased a 3LT-equipped '10 Grand Sport on July 9, 2009. The company's specific purpose for buying the car was to perform long-term durability testing on its products. Callaway technicians began by adding the SC606 package ($21,395), which included an Eaton TVS2300 supercharger with a liquid-to-air intercooler, high-flow injectors, and upgrades to the fuel system. A Callaway "Honker" air intake and "Double D" stainless exhaust were also installed. The package was completed with a carbon-fiber hood bulge, embroidered Callaway floor and trunk mats, anodized doorsill panels, an SC606 dash plaque, an underhood plaque with specific VIN, and Callaway emblems for the fenders and rear fascia.
On September 22, 2009, Callaway handed the car over to Corvette Program Manager Chris Chessnoe. The plan was for Chessnoe to drive the GS to dealerships around the country (and beyond) in an effort to expand Callaway's distribution network. It must have worked, because the company now has 29 North American dealers--27 in the U.S. and two in Canada. Customers can order and take delivery of their new Callaway vehicles directly through this dealer network.
During 2010 a short-throw shifter ($490) and a Callaway/Eibach suspension system ($5,790) were added to the test car. Callaway also installed a prototype brake package for durability testing. By the end of 2010, the car had accumulated more than 60,000 miles with no reported problems.
1 It's hard to imagine that...
1 It's hard to imagine that this '10 Callaway Grand Sport already showed 77,500 miles on its clock when we picked it up.
2 Callaway Corvette Program...
2 Callaway Corvette Program Manager Chris Chessnoe (in hat) talks with a potential customer at the NCRS Winter show in Orlando. The car was still fitted with its original wheels at this show.
3 The Eaton TVS blower is...
3 The Eaton TVS blower is available in black or optional ChromeCoat. Like all manual GSs, this one was fitted with a dry-sump oiling system at the factory. It used no oil during our 3,000-mile journey.
In January, Team VETTE visited with Chessnoe at the NCRS Winter meet in Orlando, where he and Clearwater-based Callaway dealer Dimmitt Chevrolet were doing a sales promotion. We asked if we could borrow the GS, to evaluate how it was standing up to the strain of constant heavy use. He agreed, with one condition: "Rack up the miles." No problem! We arranged to pick up the car at the 2011 National Corvette Museum Birthday Bash.
When Chessnoe handed us the keys in Bowling Green, the car showed 77,500 miles on the clock. Clearly he had been busy since our Orlando meeting. The GS was now equipped with Callaway/OZ Black Chrome wheels with Michelin 19/20 Pilot Sport 2 Zero Pressure tires ($6,150). It also had a prototype carbon-fiber spoiler and rocker moldings, which might become available as a future option. The new additions were a nice touch to the looks of this already striking car.
Before we started our journey, we gave the Callaway a close inspection. It was hard to believe it had accumulated so many miles. The paint showed a few rock nicks on the front, but nothing major, and the rest of the finish looked new. The seats didn't show wear, nor did the steering wheel or cargo compartment.
During our first drive, we found that the car was tight except for some creaks in the removable roof panel. The six-speed manual transmission and short-throw shifter were rattle free and allowed for extremely quick, precise shifting. On a back road with no traffic, we hammered it through the gears. The 606hp engine pulled strongly to the redline, with no lag or flat spots. We drove a similar Callaway on the German Autobahn a few years ago, and it easily hit 200 mph. The handling was precise and capable in any type of corner. In short, the high mileage did not seem to have affected the car's performance in the least. We departed Bowling Green and headed to our first stop in Knoxville, Tennessee, where we had arranged to spend the night with a fellow Corvette enthusiast.
4 Chessnoe hands Team VETTE...
4 Chessnoe hands Team VETTE the key fob to the GS. We picked up the car at the National Corvette Museum in Bowling Green, Kentucky.
5 The carbon-fiber hood bulge...
5 The carbon-fiber hood bulge is an innovative way to make room for the top-mounted supercharger; integral vents help keep the engine compartment cool. Using the bulge, instead of a completely new hood, eliminates the need for paint matching.
6 OZ wheels (19-inchers up...
6 OZ wheels (19-inchers up front and 20s in the back) are fitted with Michelin's excellent Zero Pressure Pilot Sport 2 tires. The prototype brakes include slotted rotors and one-piece pads all around. Callaway Competition in Germany produced the carbon-fiber lower rocker panels.