For Release: April 1, 2004, 12:01 a.m. EST
All-New 2005 Chevrolet Cobalt SS Supercharged
Coupe - Engineered for Performance driving
- 205 hp race-inspired Ecotec 2.0-liter supercharged four-cylinder
engine and five-speed manual transmission
- Nürburgring-developed chassis, suspension and brakes
- 18-inch wheels and performance tires
- Distinctive exterior and interior styling - front and rear
fascia extensions, custom rocker moldings, high rear decklid
spoiler, color-keyed front- and rear-seat inserts, boost gauge
DETROIT - The 2005 Chevrolet Cobalt SS Supercharged
Coupe is the high-performance model in the Cobalt family of coupes
and sedans that will debut in the fourth quarter of 2004. The
Cobalt SS Supercharged builds upon the expressive design and dynamic
driving experience of the Cobalt Coupe and Coupe SS.
“The Cobalt SS Supercharged Coupe was developed to appeal
to the tuner enthusiast,” said Pete Langenhorst, Chevrolet
Cobalt marketing director. “We engineered from the very
beginning all the key components to deliver an exciting driver’s
high performance sport coupe – straight from the factory.”
Strong foundation - Body structure, chassis, suspension
The Cobalt was created on a strong foundation. The rigid lower-dominant
body structure is engineered as a single unit for mass efficiency
and stiffness. The underbody uses high-strength steel as welded
members in strategic locations for maximum strength, structural
integrity, mass optimization and crashworthiness.
The Cobalt’s suspension tuning was refined at Germany’s
famous Nürburgring, one of the world’s most challenging
road courses with more than 170 turns in nearly 13 miles.
Cobalt SS Supercharged features a strut-type front suspension,
semi-independent torsion beam rear suspension, and increased diameter
front and rear stabilizer bars with tuned suspension bushings.
In addition, the chassis and springs were stiffened, the spring
rates and damping were specially tuned and the shock strut valving
was modified for a responsive, sport suspension feel. The monotube
rear shocks with 33-millimeter pistons are larger in diameter
than those found on standard Cobalts. The coupe’s ride height
also has been reduced by 10 millimeters. The electric power steering
also is tuned for increased driver feedback.
Large brakes and wheels
Cobalt SS Supercharged features four-wheel anti-lock disc brakes.
The front disc rotors are 11.6 inches in diameter, which is approximately
1 inch larger than the rotors on standard Cobalt models. The rear
drum brakes standard in other Cobalts were also replaced with
disc brakes with 10.6-inch rotors. They are mounted on an all-new
rear axle assembly that incorporates revised suspension geometry.
The SS Supercharged features larger, five-bolt wheel hubs, brake
calipers and brake pads. The larger calipers and brake pads allow
greater braking capacity and are proven performance parts found
in other high-performance GM vehicles.
Cobalt SS Supercharged features the segment’s leading wheel
size with 18-inch forged-steel alloy wheels and P215/45R18 Z-rated
The Cobalt SS Supercharged Coupe features a race-inspired Ecotec
2.0-liter supercharged four-cylinder engine and five-speed manual
transmission. Cobalt benefited from GM Racing’s successful
Ecotec-powered cars competing in the NHRA Summit Sport Compact
Racing Series with significant learnings transferred during the
development of the Cobalt.
The Ecotec 2.0L SC four-cylinder engine delivers 205 horsepower
at 5600 rpm and 200 lb.-ft. of torque at 4400 rpm. Compared to
the Ecotec 2.2-liter I-4, the cam timing was altered significantly
to raise the mid-range torque and to match it with the top-end
The engine includes an Eaton M62 helical roots-type supercharger
and features an air-to-water intercooler to reduce the temperature
of air entering the engine. The supercharger produces a maximum
boost pressure of 12 pounds per square inch (psi).
The Ecotec 2.0L SC is mated to a five-speed manual transmission.
The 240-millimeter clutch assembly is larger on the 2.0-liter
supercharged I-4 than the other naturally aspirated Ecotecs. The
five-speed has close-ratio gearing that is tailored to the power
band of the 2.0-liter engine. To improve acceleration the final
drive ratio is also shorter at 4.05:1. A short-throw shifter quickens
the shifts and provides a more positive feel as well. The shifter’s
travel is approximately 1 inch shorter than the shifter found
in standard Cobalt models. Equal length transmission half shafts
are also utilized to address torque steer in this front-drive
Distinctive design and features
The exterior styling of the Cobalt SS Supercharged complements
the performance aspects of the car. The front fascia features
a large, deep air inlet and the rear fascia has a cutout for the
large, chromed exhaust tip. Along with revised rocker moldings,
the enhanced bodywork of the SS Supercharged visually lowers the
coupe 1 inch. Halogen fog lamps are also included.
The Cobalt Supercharged SS comes standard with a unique, aggressive
rear decklid spoiler. The coupe will offer five exterior body
colors including Rally Yellow, Black, Orange Metallic, Victory
Red and Arrival Blue Metallic.
The interior was also modified to complement the performance
characteristics of the Cobalt SS Supercharged Coupe. The accelerator
pedal was redesigned to enable heel-and-toe driving to improve
driver feedback and response. The interior also features titanium-faced
speedometer, tachometer and gauges in the instrument cluster,
and an A pillar-mounted boost gauge to monitor supercharger performance.
The interior color is Ebony with satin nickel accents on the
instrument panel, shifter base and doors. The front leather seats
include color-keyed perforated inserts, driver-side manual lumbar
adjuster, adjustable head restraint, and passenger-side seatback
map pocket. In addition, there is a 60/40 split-bench rear seat
with color-keyed inserts and a trunk pass-through.
Cobalt SS Supercharged Coupe offers a long list of standard features
including air conditioning; power windows and locks; remote keyless
entry; tilt steering wheel with mounted audio and cruise controls;
electric rear defogger; CD player; MP3 playback; seven-speaker
Pioneer premium sound system; and driver information center. Available
features include side head curtain air bags, power sunroof, XM
Satellite Radio and OnStar.
Cobalt SS Supercharged – Facts and figures
- April 1, 2004: World premiere to media at Irwindale Speedway
in Irwindale, Calif. , and public introduction at the Specialty
Equipment Market Association International Auto Salon April
2-4 in Los Angeles
- November 2004: Start of production, market launch
- Manufactured at General Motors' Lordstown, Ohio assembly
plant. GM invested more than $500 million in plant to support
Cobalt. The Ecotec 2.0L SC I-4 is manufactured at the FGP Kaiserslautern,
Germany, engine assembly facility.
- Cobalt SS Supercharged pricing to be announced in third quarter
- Chevrolet Cavalier, which debuted in 1982, will end production
at GM Lordstown Assembly Plant in October 2004.
Cobalt SS Supercharged – Preliminary Specifications
unibody construction with extensive
use of high-strength steel
Wheelbase (in / mm):
103.3 / 2624
Length (in / mm):
180.5 / 4584
67.9 / 1725
Ecotec 2.0L supercharged
Horsepower (hp/kw @ rpm):
205/153 @ 5600
Torque (lb-ft/Nm @ rpm):
200/272 @ 4400
FGP 5-speed manual
Final Drive Ratio:
disc front / disc rear, anti-lock
strut-type with stabilizer bar
semi-independent, torsion beam
P215/45R-18 Z-rated performance
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