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2009 Pontiac G8 GXP news, pictures, and information
PONTIAC ANNOUNCES THE 2009 G8 GXPHigh-Performance Flagship Combines Progressive Design and Powerful Performance
Today Pontiac announced the flagship of its GXP performance series, the G8 GXP high-performance sedan, at the New York Auto Show. This 2009 model will join the Solstice, G6 and Torrent GXP models in Pontiac dealerships in late 2008. The G8 GXP takes the G8's responsive driving experience, refined passenger environment and aggressive good looks to a new level. It also delivers an enjoyable driving experience, thanks to a 6.2L V-8 that produces in excess of 400 horsepower.
'More than just raw power, the GXP delivers the sophisticated yet exciting driving experience that enthusiasts expect in a car costing far more than the GXP,' said Jim Bunnell, Buick-Pontiac-GMC general manager
Engine performanceThe heart of the G8 GXP is the 6.2L LS3 small-block V-8, currently rated at 402 horsepower (300 kW)* and 402 lb.-ft. of torque (546 Nm)* pending final SAE certification. This engine is the newest member of GM's small-block V-8 family. It features a revised, larger-bore cylinder block, high-flow, L92-style cylinder heads; larger-diameter pistons; unique camshaft and camshaft timing; revised valvetrain wîth offset intake rocker arms; high-flow intake manifold; and high-flow fuel injectors.
The LS3 engine has an aluminum cylinder block wîth cast-in-place iron cylinder liners. Larger bores help create a 376-cubic-inch displacement. The block casting also features revisions and machining in the bulkheads to enhance its strength and improve bay-to-bay breathing. New pistons were designed for high-rpm performance.
New, high-flow cylinder heads aid engine breathing and are based on the large port and valve design found on the LS7 engine and other GM L76 engines. The larger-capacity, straighter intake port-design optimizes intake flow to the combustion chamber, an effect augmented by large valves, measuring 2.16 inches (55.0 mm) on the intake side and 1.59 inches (40.4 mm) on the exhaust side.
Pending final testing, the G8 GXP is expected to deliver 0-to-60 mph performance of about 4.7 seconds, and a quarter-mile time of 13.0 seconds at 108 mph.
Six on the floor
A new six-speed Tremec TR6060 manual transmission is optional on the G8 GXP. This next-generation manual smoothly transfers the engine's power and torque to the rear wheels wîth a reduction in shift throw. The transmission features a host of refinements including premium gear synchronizers; stronger gears, housing, and bell housing; a single-piece counter shaft; and machined gear teeth.
The standard Hydra-Matic six-speed 6L80 automatic transmission is technologically advanced and robust. It uses a clutch-to-clutch operation and an integrated 32-bit transmission controller to deliver smooth and precise shifts. The six-speed has a generous 6.04:1 overall ratio that enables a 'steep' first-gear. The result is strong launch acceleration along wîth 'tall' overdrive ratios that lower engine rpms for better fuel economy and reduced noise.
A 3.27 final drive ratio comes wîth automatic-equipped GXPs, and a 3.70 gear is matched wîth the manual transmission. (posted on conceptcarz.com) A limited-slip differential is standard.
The G8 GXP rides on the G8's 114.8-inch (2915 mm) wheelbase wîth wide front ( 62.7 inches / 1,592 mm) and rear ( 63.3 inches / 1,608 mm) tracks. The four-wheel independent suspension is fully adjustable and is tuned for the highest performance in the G8 family. The GXP's ride and handling was developed and validated on racetracks and highways around the world, including the famed Nürburgring racing circuit. It rewards the driver wîth sharp, immediate responses, as well as a well-balanced road feel during spirited driving.
The suspension employs a MacPherson strut design in the front and a four-link, coil-over-shock design in the rear. A direct-acting front stabilizer bar, decoupled rear stabilizer bar and lateral ball joints on the rear suspension deliver increased lateral stiffness for more responsive handling. The front suspension features fully adjustable caster, camber and toe; the rear suspension has fully adjustable camber and toe, for more precise tuning.
Steering and brakes
The §teering rate for the GXP is tuned to provide immediate response wîth definitive driver feedback. Like the G8 sedan and GT, the GXP's §teering box is located ahead of the front axle line for a quicker, more direct feel.
The Brembo braking system matches the GXP's boost in performance wîth an equivalent increase in stopping power. The system includes 14-inch (355 mm) vented front and 12.76-inch (324 mm) rear disc rotors, wîth special quad-piston alloy calipers in front. The alloy calipers on the rear brakes have single-piston actuation. The four-wheel disc brake system includes standard anti-lock brakes and traction control.
Wheels and tires
|Engine : 6.2 L., 8-cylinder|
Power: 402 hp
Torque: 402 ft-lbs
The G8 GXP exhibits strong Pontiac design cues. A unique front fascia wîth a lower splitter and a distinctive rear fascia diffuser contribute to its sporty look. The dual-port grille, fog lamps, bold wheels and confident, wheels-at-the-corners stance are all unmistakably Pontiac traits.
Interior amenities and comfort
The G8 GXP's interior is driver-oriented wîth aesthetic and tactile details like instruments wîth a sporty appearance that match the car's performance. Interior materials consist of satin and chrome trim and high-quality textured materials throughout. The instrument cluster glows wîth crisp, white light on the primary instruments. Pontiac's signature red lighting illuminates the rest of the instrument panel cluster.
Standard comfort and convenience amenities include:
* Highly bolstered two-tone sport seats wîth color-coordinated gauge cluster and GXP embroidery
* Leather-trimmed §teering wheel and gear shifter
* Power-adjustable front seats
* Fog lamps
* Alloy sport pedals
* A 230-watt Blaupunkt audio system
* XM Satellite Radio
The seats offer firm support to hold occupants in place during aggressive cornering. The standard heated leather seats were designed to deliver excellent comfort during long drives. They are available in Ebony or an Ebony/Red two-tone.
Maintaining the G8's tradition of a full suite of standard safety features, the G8 GXP includes:
* Four-wheel disc brakes wîth ABS and traction control
* Electronic stability control
* Seat-mounted thorax air bags and dual-stage frontal air bags for front passengers, wîth automatic passenger sensing system
* Roof rail side-impact air bags for both seating rows
* OnStarSource - Pontiac
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|2009 Pontiac models|
|Pontiac Solstice Coupe|
|Pontiac Solstice GXP Coupe Concept|
|Pontiac Vibe||2009 Pontiac Concepts|
|Pontiac G8 GXP Street Concept|
|Pontiac G8 ST Concept|
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