2010 Corvette Grand Sport: Wider, Sportier, GranderS

Absent since the C4's demise, the Corvette Grand Sport is back for 2010, this time sporting wider Z06 bodywork, larger brakes and the option of either a Coupe or Convertible. Another commemorative sticker package? Not-so-much.

We know what you're probably thinking and to be perfectly honest, we were thinking it too. This is not another commemorative package, nor is it a sticker package, instead the 2010 Corvette Grand Sport is a bonafide performance package that will help to distinguish the different Corvette models even more so.

Chevrolet's plan is to rid the lineup of the Z51 package Vettes, instead replacing it with a uniquely designed new Grand Sport model. Everything that you know and love about the Z51 will be here, but now, with the help of new Z06-derived bodywork you won't be confused with those driving lesser base-model Vettes.

2010 Corvette Grand Sport: Wider, Sportier, GranderS

2010 Corvette Grand Sport: Wider, Sportier, GranderS

The 6.2-liter LS3 V8 remains, pumping out the same extremely capable 430 horsepower and 424 lb-ft or torque (436 horsepower and 428 lb-ft with the optional two-mode sport exhaust) and is easily manipulated to do your bidding through either a six-speed manual or six-speed automatic transmission. The Grand Sport's calipers are distinguished by their silver with red lettering and the rotors have been enlarged to Z06-spec, 14-inch with six-piston calipers in front and 13.4-inch with four-piston grabbers in the rear. Also equipped are revised shock/spring settings and heavier duty stabilizer bars. The 2010 Grand Sport rides on unique 18-inch front and 19-inch rear wheels wrapped in sticky 275/35ZR18 and 325/30ZR19 tires, front and rear.

For those that opt to equip their Grand Sport with the six-speed manual transmission, Chevrolet will throw in a dry-sump oiling system, differential cooler and a rear-mounted battery. All-in-all, these improvements should net an enthusiastic 2010 Grand Sport driver with a 0.2-second improvement over the existing Z51-model.

The Grand Sport can be equipped in either Coupe or Convertible body styles, but regardless of which you choose, you'll be rewarded with a wider Z06-style front fascia with a Z06 lower lip spoiler, the only thing missing is the scoop on the nose. Z06-width front fenders replace the stock Vette's with a Grand Sport badge sitting atop dual vertical gills. The rear fenders have been replaced with Z06 units with functional brake cooling ducts. You can have your Grand Sport in any available Corvette color as well as all four different available trim levels (1LT, 2LT, 3LT and 4LT). A heritage package is also available, adding a pair of dual stripes on the front fenders in either silver or red. The interior features special Grand Sport embroidery on the seat head rests.

The 2010 Corvette Grand Sport is publicly being announced at the 12th annual C5/C6 Corvette Birthday Bash at the National Corvette Museum in Bowling Green, Kentucky this weekend. Pricing is yet to be announced, but expect it to be somewhere around current Z51-package pricing. We'll take ours in Coupe-spec painted in Le Mans Blue (Okay fine, Jet Stream Blue) with the red stripes please.

Chevrolet Announces New 2010 Corvette Grand Sport

BOWLING GREEN, Ky. – Grand Sport. It's one of the most storied monikers in Corvette's illustrious racing heritage and it is returning the lineup. Chevrolet announced the new, 2010 Corvette Grand Sport at the 12th annual C5/C6 Corvette Birthday Bash, held at the National Corvette Museum, in Bowling Green, Ky.

The new Grand Sport model combines the Corvette's LS3-based powertrain with unique, wide-body styling and a racetrack-bred suspension for a distinctive, starting grid-ready performer. It is offered in both coupe and convertible body styles, with either a six-speed manual or six-speed automatic transmission. The LS3 6.2L engine is rated at 430 horsepower (321 kW)* and 424 lb.-ft. of torque (575 Nm)* with the standard exhaust system. An optional two-mode exhaust system elevates the power ratings to 436 horses (325 kW) and 428 lb.-ft. (580 Nm).

The Grand Sport replaces the Corvette's previous Z51 package and brings a greater degree of handling performance, with wider wheels and tires; revised shock, stabilizer bar and spring specifications and specific gearing. The equipment enables cornering capability of 1.0 g, as well as a 0.2-second improvement in 0-60 acceleration vs. standard LS3-powered models.

Grand Sport coupe models equipped with the manual transmission are uniquely outfitted for racetrack competition, too, with a dry-sump oiling system, differential cooler and a rear-mounted battery.

The complete list of content and special features for the Grand Sport includes

* Wider front and rear fenders – including specific front fenders with integrated Grand Sport badges
* Z06-style front splitter and tall rear spoiler
* Functional brake ducts and extra cooling
* Unique 18-inch front and 19-inch wheels; painted finish standard and chrome finish optional
* Large 275/35ZR18 tires in front and 325/30ZR19 tires in the rear
* Z06-size brakes, including 14-inch (355 mm) front rotors with six-piston calipers and 13.4-inch (340 mm) rear rotors with four-piston calipers
* Specific manual transmission gear ratios
* Specific rear axle ratio on automatic-equipped modles

With its special equipment, the Grand Sport offers a unique blend of performance and amenities. Its suspension package approaches that of the Z06, but includes a removable roof on coupes (Z06 has a fixed roof) and, of course, the availability of a convertible body style. Also, the paddle-shift six-speed automatic transmission is offered, while a manual transmission is the only choice with the Z06.

All of Corvette's exterior colors are offered on the Grand Sport and an available Heritage package adds iconic front fender hash marks offered in four colors, as well as two-tone seats with Grand Sport embroidery. The Grand Sport can be ordered with 1LT, 2LT, 3LT and 4LT trim packages, too.

Grand Sport history

Envisioned by legendary Corvette engineer Zora Arkus-Duntov as a factory-built, lightweight and race-ready production model that would trump domestic and foreign road-racing competitors, the original Corvette Grand Sport was a promising idea stymied by GM's agreement to stay out of manufacturer-backed motorsports.

The planned 125 production models required for racing-class homologation were never built, but five prototypes based on the styling of the 1963 Corvette were hand-assembled under Duntov's watchful eye. And while they looked like production models, the prototypes were purpose-built racecars that shared little with their assembly-line cousins. Duntov also oversaw the Grand Sport engine program that featured a special, 377-cubic-inch small-block V-8 and used side-draft carburetors.

Although never officially sanctioned by General Motors, the five Grand Sport prototypes saw extensive racing experience throughout the 1960s in the hands of "private" racers who had strong contacts within Duntov's engineering circle. All five original cars are accounted for today and are among the most valuable in the collector market.

Chevrolet offered a limited-edition Grand Sport production model in 1996, commemorating the original racing cars and marking the end of the C4 era in Corvette production. All of the 1,000 examples were painted Admiral Blue and featured a white center stripe and red "hash mark" graphics on the left front fender, a graphic scheme that mimicked the look of some of the original racecars.

*SAE certified.
SPECIFICATIONS

Overview

Models:

Chevrolet Corvette Grand Sport Coupe and Convertible

Body styles / driveline:

two-door hatchback coupe with removable roof; rear-wheel drive (Coupe and Convertible)

Construction:

composite body panels, hydroformed steel frame with aluminum and magnesium structural and chassis components (coupe);

composite and carbon-fiber body panels, hydroformed aluminum frame with aluminum and magnesium structural and chassis components (Z06)

Manufacturing location:

Bowling Green, Ky.

Engines

6.2L V-8 LS3

Displacement (cu in / cc):

376 / 6162

Bore & stroke (in / mm):

4.06 x 3.62 / 103.25 x 92

Block material:

cast aluminum

Cylinder head material:

cast aluminum

Valvetrain:

overhead valve, two valves per cylinder

Fuel delivery:

SFI (sequential fuel injection)

Compression ratio:

10.7:1

Horsepower
(hp / kW @ rpm):

430 / 321 @ 5900* w/ std. exhaust

436 / 325 @ 5900* w/ opt. exhaust

Torque (lb-ft / Nm @ rpm):

424 / 575 @ 4600* w/ std. exhaust
428 / 580 @ 4600* w/ opt. exhaust

Recommended fuel:

premium recommended not required

EPA estimated fuel economy (city / hwy):

15 / 25 (automatic)
16 / 26 (manual)

Transmissions

Tremec six-speed manual

Hydra-Matc 6L80 six-speed paddle-shift automatic

Application:

std.

opt.

Gear ratios (:1)

First:

2.97

4.03

Second:

2.07

2.36

Third:

1.43

1.53

Fourth:

1.00

1.15

Fifth:

0.71

0.85

Sixth:

0.56

0.67

Reverse:

3.28

3.06

Final drive ratio:

3.42

2.73

Chassis / Suspension

Front:

short/long arm ( SLA) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, monotube shock absorber

Rear:

short/long arm ( SLA) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, monotube shock absorber

Traction control:

electronic traction control; Active Handling

Brakes

Type:

front and rear power-assisted disc with ABS with six-piston front and four-piston rear calipers, cross-drilled rotors

Rotor diameter x thickness (in / mm):

front: 14 x 1.3 / 355 x 32
rear: 13.4 x 1 / 340 x 26

Brake swept area
(sq in / mm):

front: 309 / 1994
rear: 269 / 1735

Wheels & Tires

Wheel size:

front: 18-inch x 9.5-inch
rear: 19-inch x 12-inch

Tires:

front: P275/35ZR18
rear: P325/30ZR19

Dimensions

Wheelbase (in / mm):

105.7 / 2685

Overall length (in / mm):

175.6 / 4460

Overall width (in / mm):

75.9 / 1928

Overall height (in / mm):

48.7 / 1236

Curb weight (lb / kg):

3311 / 1502 (Grand Sport Coupe)
3289 / 1492 (Grand Sport Convertible)

Weight distribution
(% front / rear):

51 / 49

Interior

Seating capacity

2

Interior volume (cu ft / L):

52 / 1475

Headroom (in / mm):

38 / 962

Legroom (in / mm):

43 / 1092

Shoulder room (in / mm):

55 / 1397

Hip room (in / mm):

54 / 1371

Capacities

Cargo volume
(cu ft / L):

Coupe: 22 / 634
Convertible: 11 / 295 (top up); 7.5 / 212 (top down)

Fuel tank (gal / L):

18 / 68.1

Engine oil (qt / L):

5.5 / 5.2 (automatic transmission)
10.5 / 9.9 (manual transmission)

* SAE certified.
Note: Information shown is current at time of publication.

[via GM]