Sixth generation Corvette C6

Press Release

New six-speed Paddle Shift automatic transmission

 

The new electronically controlled six-speed Paddle Shift automatic transmission features clutch to clutch operation, manual control shift operation and an integrated 32-bit electronic controller. A wide, 6.04:1 overall ratio helps deliver exciting acceleration performance along with excellent fuel economy.

 

The six forward gears have smaller “steps� between them, which enhances the feeling of performance and smoothness. The smaller steps also enable a steep, 4.02:1 first gear, which provides an improved-performance launch feel when compared with the previous four-speed automatic’s 3.06:1 first gear. There are two overdrive gears: a 0.85:1 ratio in fifth gear and a 0.67:1 ratio in sixth. The final drive ratio of Corvette models equipped with the new transmission is 2.56:1.

 

Technological sophistication is exemplified by two electronically controlled automatic modes, Drive and Sport; plus manual Paddle Shift. The Drive mode follows a specific shift schedule of predetermined shift points, while the Sport mode enables Performance Algorithm Shifting (PAS). PAS modifies shift patterns when performance driving is recognized by the controller. The Drive mode optimizes shifts for smoothness, while the Sport mode enables firmer shifts for better performance. With the Paddle Shift mode, gear changes are made with manual control paddles located on the steering wheel.

 

The performance and functions of the six-speed Paddle Shift transmission with automatic modes are guided by an integrated controller. The controller is located inside the transmission, reducing complexity. A new 300-mm torque converter, new rear bell housing, new driveline support and revised-length driveshaft also support the transmission’s integration into the Corvette.

 

Enhanced chassis and suspension

 

The overall Corvette design philosophy continues with its low-weight hydroformed steel rail backbone structure, cored composite floors, an enclosed center tunnel, rear-mounted transmission and aluminium cockpit structure, but the Corvette adds a host of improvements. Overall vehicle weight is significantly reduced, despite mass-increasing features such as larger wheels and tires, more robust brakes and increased body acoustics. It also delivers a quieter, even more pleasing ride.

 

The short-long arm and transverse leaf spring independent suspension configuration remains, but not a single suspension component has been carried over from its predecessor. Goodyear Extended Mobility Tires (EMT) take advantage of the latest sidewall design and compound technology for run-flat capabilities.

 

Three dynamic chassis control systems – anti-lock braking, traction control, and Active Handling – operate in concert to provide a strong, but unobtrusive safety net for spirited driving. The stability controls share sensors for steering angle, wheel speed, and acceleration and deceleration in all directions, but unlike some more intrusive systems, the Corvette team developed a calibration philosophy which works with the drivers in their spirited driving, rather than against them.

 

Optimised suspension and steering geometry, along with advanced compounds in the tires, directional control arm bushings, increased caster angle and greater suspension travel give result in a faster car that is easier to drive, with greater lateral acceleration, more body control, less noise transmitted from the road, and better traction and stability in corners. Two suspension choices allow drivers to choose the set-up that best suits their driving style. Corvette is now more poised at even higher handling levels, yet easier to drive. 

 

The optional F55 Magnetic Selective Ride Control suspension features magneto-rheological dampers able to detect road surfaces and adjust the damping rates to those surfaces almost instantly for optimal ride control. The system has been improved to deliver more differentiation between the system’s “Tour� and “Sport� settings.

 

Corvette Convertible

 

The thrill of open-air motoring was a part of the original allure when the Chevrolet Corvette was born in 1953. The sixth-generation Corvette Convertible brings serious performance and thoughtful refinement to the fun of driving a roadster. The no-compromise Corvette Convertible offers identical performance, refinement and equipment levels to the Coupe.

 

“We designed the Corvette from the outset as an open car, so there’s no compromise in ride, handling and performance for the Convertible compared to the Coupe,� said Dave Hill, Chief Engineer for the Corvette and Vehicle Line Executive for GM Performance Cars. “We sweated the details to ensure that the Convertible driver has all the performance of the Coupe, with surprising quietness and excellent storage capability for a roadster, top-up or top-down.�

 

The sixth-generation Corvette Convertible features a power-operated soft top, a feature that last appeared on the car in 1962. The power top features a single-button control and completes its cycle in 18 seconds. The top is designed and manufactured in partnership between GM and Car Top Systems, GmbH, experts who have contributed to some of the world’s most celebrated open cars.

 

The convertible top for the sixth-generation Corvette reflects great attention to detail to net improvements in aesthetics, aerodynamics and utility. The canvas soft top is available in three colors: Black, Beige and Grey. In its closed position, the canvas top has a smoother, more contoured appearance that conceals the underlying structure better than traditional soft tops. In addition to aiding a clean appearance, this also helps preserve the outstanding aerodynamic characteristics.

 

Improved top-down quietness

 

The Corvette’s structure, including an aluminium windshield frame, was designed using extensive computer airflow models to improve top-down quietness – especially for noise frequencies in the range of passenger conversations. The top material itself is made of a thick fabric called Twillfast, constructed in five layers for strong durability and insulation.

 

Several more details combine to make the convertible more pleasing to drive. Every option available on the Coupe can be specified on the Convertible too. A bulkhead has been added to better contain small items in the trunk and enable the addition of a storage area behind each seat. Rear visibility is improved with a glass backlight that is 18.5 percent larger than the previous model. Like its predecessor, the backlight has a standard rear defogger. The Corvette is equipped with a luxury package: memory package, heated seats, head up display, power telescoping steering column, 7 premium Bose speakers and auto dimming rear view mirrors.

 

The Corvette Coupe and Convertible are built in Bowling Green, Kentucky, USA.