Thanks to ongoing improvements,...
Thanks to ongoing improvements, the ’13 edition is the best C6 yet. A bewildering array of models, powertrains, and option packages means you can configure your Corvette exactly the way you want it.
Going Out In Style
It's hard to say goodbye to the sixth-generation Corvette. Since its debut nearly eight years ago, we've filled our pages with C6 test drives and shown how a variety of tuners have extracted maximum performance from the car.
Tom Peters, the C6's exterior designer, gave us our first ride in the car in April 2004. He provided us with an overview of his design philosophy for the car, which focused on making it more compact while retaining the Corvette heritage.
Later that year, we attended the 2004 Corvette at Carlisle event, where Carlisle Events' Lance Miller took delivery of his own C6. Shortly after the show, he delivered the car to Callaway Cars for upgrades. We followed these changes in a multi-part series that included modifications to the engine and suspension. This project helped familiarize us with the C6's strengths as well as areas that needed improvement.
GM engineers have also done their best to keep the C6 competitive, and their ministrations have yielded consistent, meaningful improvements over the vehicle's model run. In our opinion, the current Corvette is the best sports-car value in the world. What follows is an overview of its evolution.
A Solid Foundation
The “marriage” of the C6 body...
The “marriage” of the C6 body and mechanicals duplicates the way the C5 was constructed. The hydroformed frame is the foundation for the body structure, while a pair of cradles hold the mechanical components.
The C6 had big shoes to fill following the success of the C5. Chief Engineer Dave Hill and his team developed an innovative mechanical structure for the C5, and lead designer John Cafaro wrapped it all in a sleek aerodynamic body that drew crowds. Its foundation was a hydroformed steel frame that held the body structure in place during assembly. A front aluminum subframe secured the front suspension and brakes, steering rack, and engine, while a rear subframe held the rear suspension and brakes, differential, and transmission. The two assemblies were joined with a torque tube that held a driveshaft. The body and frame came together in a "marriage" on the assembly line, with four bolts in the front and four in the rear. The car was a true stunner that provided incredible performance for the money.
Corvette Assembly Plant Manager...
Corvette Assembly Plant Manager Wil Cooksey was photographed driving this C6 in April 2004.
Hill, engineer Tadge Juechter, and the Corvette team worked closely with designer Peters to begin development of the C6 in 2000. The team's goal was to "tighten" the body design to make it smaller and more space efficient.
As a result, the C6 was five inches shorter (174.6 vs. 179.7) and one inch narrower (72.6 vs. 73.6) than the C5. The wheelbase was lengthened (105.7 vs. 104.5) to improve the car's ride, a change made possible by moving the front cradle forward. The C6's drag coefficient even improved slightly (to .28 from .29) over the previous car.
Under the hood, the new 6.0L LS2 engine raised output by 50 horsepower over the 5.7L LS1, yielding figures of 400 hp and 400 lb-ft of torque. The C6 was lauded by the motoring press for its performance and styling. Corvette buyers apparently agreed, as sales for 2005 totaled 37,372 units.
The Z06 Returns
This Inferno Orange ’11 Z06...
This Inferno Orange ’11 Z06 is fitted with the optional Z07 package, which includes ZR1 ceramic brakes, Magnetic Selective Ride Control, Michelin PS2 ZP tires, and 20-spoke wheels.
The Z06 returned to the lineup in '06 featuring an aluminum hydroformed structure, magnesium cradles, and lightweight carbon body panels. Thanks to these weight-saving efforts, the car tipped the scales at a mere 3,132 lbs. Among recent Corvettes, only the '04 Z06 Commemorative Edition, at 3,118 lbs, was lighter.
Stuffed inside this lightweight structure was a racing-derived 7.0L LS7 engine that produced 505 hp and 470 lb-ft of torque. Larger brakes, wheels, tires, and stretched front and rear fenders were also standard. Customers clamored to buy this new Corvette hot-rod, sometimes paying exorbitant dealer premiums for the privilege.
Many Z06 styling features...
Many Z06 styling features were incorporated into the hugely successful C6.R race car. This C6.R (chassis #002) won its class at the 2005 24 Hours of Le Mans race, in spite of suffering a flat tire early in the race.
To help demonstrate the new ueber-Vette's racing mettle, Chief Engineer Hill sent six "Captured Test Fleet" Z06s to Europe to be converted into race cars. Callaway Competition in Leingarten, Germany, promptly built them into Z06.R GT3 racers and turned them loose on road courses across the continent. Since then, a total of 23 have been constructed, and these cars have won multiple FIA GT3 championships.
Other big news for '06 included the introduction of a new six-speed automatic transmission with steering-wheel-mounted paddle shifters. On the personnel front, Dave Hill retired after spending 12 years as Corvette's chief engineer, handing the reins to Tadge Juechter. Tom Wallace, meanwhile, assumed the title of Vehicle Line Executive, a position from which he would also oversee the Corvette-based Cadillac XLR.
New for 2005 was an updated...
New for 2005 was an updated powerplant called the LS2. The 364ci engine had a compression ratio of 10.9:1, and produced 400 hp and 400 lb-ft of torque.
Corvette fans cheered when...
Corvette fans cheered when the new LS7 debuted in the ’06 Z06. It displaced 427 ci, thanks to a 4.125-inch bore and a 4.000-inch stroke. Compression was 11.0:1. The dry-sump engine produced 505 hp and 470 lb-ft of torque.
The LS2 was superseded by...
The LS2 was superseded by the LS3 in 2008. It boasted a displacement of 376 ci, a compression ratio of 10.7:1, and output figures of 430 hp and 424 lb-ft of torque. The optional NPP exhaust added another 6 horses and 4 lb-ft.
The new LS9 engine elevated...
The new LS9 engine elevated the Corvette to supercar status in 2009. The LS9 had the same dimensions as the LS3 but used an intercooled Eaton TVS2300 supercharger to pump up the power to 638 horses and 604 lb-ft of torque.
This photo shows the interior...
This photo shows the interior of a very-early-production C6. Though comfortable and ergonomically sound, the ’05-’07 cabin earned demerits for its utilitarian look.
The interior of this ’13 60th...
The interior of this ’13 60th Anniversary 427 Convertible is considerably more luxurious, and fitted with a host of creature comforts not found in earlier versions.