Revealed - LS3 Pontiac G8 GXP

Discussion in 'OT Driven' started by TriShield, Mar 15, 2008.

  1. TriShield

    TriShield Super Moderator® Super Moderator

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    High-Performance Flagship Combines Progressive Design and Powerful Performance

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    NEW YORK – 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 performance

    The 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 with offset intake rocker arms; high-flow intake manifold; and high-flow fuel injectors.

    The LS3 engine has an aluminum cylinder block with 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 with 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 with "tall" overdrive ratios that lower engine rpms for better fuel economy and reduced noise.

    A 3.27 final drive ratio comes with automatic-equipped GXPs, and a 3.70 gear is matched with the manual transmission. A limited-slip differential is standard.

    High-performance suspension

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    The G8 GXP rides on the G8's 114.8-inch (2915 mm) wheelbase with 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 with 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 steering rate for the GXP is tuned to provide immediate response with definitive driver feedback. Like the G8 sedan and GT, the GXP's steering 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 with an equivalent increase in stopping power. The system includes 14-inch (355 mm) vented front and 12.76-inch (324 mm) rear disc rotors, with 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

    The GXP rides on 19-inch polished aluminum wheels with a special machined face. Performance-oriented summer P245/40R19 tires are standard, and a comparable all-season tire is available. Combined with the suspension and steering enhancements, this setup gives the GXP exceptional cornering grip.

    Exterior styling

    The G8 GXP exhibits strong Pontiac design cues. A unique front fascia with 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 with aesthetic and tactile details like instruments with 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 with 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 with color-coordinated gauge cluster and GXP embroidery
    • Leather-trimmed steering 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.

    Safety

    Maintaining the G8's tradition of a full suite of standard safety features, the G8 GXP includes:

    • Four-wheel disc brakes with ABS and traction control
    • Electronic stability control
    • Seat-mounted thorax air bags and dual-stage frontal air bags for front passengers, with automatic passenger sensing system
    • Roof rail side-impact air bags for both seating rows
    • OnStar

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  2. SilverTurtle

    SilverTurtle New Member

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    do fucking want
     
  3. BigT

    BigT LSX Crew

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    :naughty:

    Is that on premium or unleaded?
     
  4. Mitchj

    Mitchj OT Supporter

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    its tune for regular unleaded, hence the lower power than the vette ls3
     
  5. TriShield

    TriShield Super Moderator® Super Moderator

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    I like how it came out, a bit more mild than expected. I think many will be offer the Commodore's big wing for it here though.

    That orange had better be a production color because the car looks fabulous in it.
     
  6. Mitchj

    Mitchj OT Supporter

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    I really like it, they done a superb job tbh.

    The big wing would be nice, its not perfect and i still prefer the holden models, but good enough should be good enough to sell very well. I wonder how it is producing those performance figures, with less power than the aussie hsv ls2 models.
     
  7. you know me

    you know me OT where the douchbags play

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    thank god i have mitch on IL
     
  8. Irvin Washington

    Irvin Washington New Member

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  9. Mitchj

    Mitchj OT Supporter

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    i'm not missing much by having to talk to you, fuckhead.
     
  10. deusexaethera

    deusexaethera OT Supporter

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    I gotta think there's no good reason to have a 6-speed on that thing. I suspect it may have a reasonably-broad torque band, thus eliminating the need to have a "perfect" gear for every condition. 6 gears is just too damn much shifting, you know people aren't gonna bother with half of 'em once they know the car can drag itself forward well enough in the "wrong" gear.
     
  11. Mitchj

    Mitchj OT Supporter

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    :rofl::ugh:
    your such a moron

    oh yeah lets give it a 4 speed manual
     
  12. Corz

    Corz ha ha! snikt

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    :rofl::rofl::rofl:

    it is a 4 speed manual


    with two overdrive gears on top :mamoru:
     
  13. deusexaethera

    deusexaethera OT Supporter

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    Okay, feel free at any time to explain how more gears are automatically better.
     
  14. Mitchj

    Mitchj OT Supporter

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    more choice is always better, better fuel economy, faster acceleration, low revs at cruising speed. 6 is the perfect number for any car.
     
  15. Corz

    Corz ha ha! snikt

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    and the 6 speeds have ALWAYS had the 1-4 skip shift during light acceleration
     
  16. Mitchj

    Mitchj OT Supporter

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    only in america, i've never driven one with that.
     
  17. you know me

    you know me OT where the douchbags play

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    wat
     
  18. art_VW_shark

    art_VW_shark OT Supporter

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    wider spread.


    are you mechanically challenged?
     
  19. deusexaethera

    deusexaethera OT Supporter

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    Wider spread is only an issue if the top speed is higher than a comparable car with fewer gears, and closer ratios are only desirable if the engine is small and peaky instead of big and torquey.

    How much torque does that engine make? Is the G8 not intended for people who sometimes feel like cruising? I think it would do fine with four forward gears, and the gearbox could be made smaller and/or stronger as a result.

    What is it with you people jumping on my ass every time I fail to spooge myself when a new car is posted? I like the G8, but that doesn't mean it's perfect. I'm sure, while 6 gears do provide a minimal benefit mated to an engine that big, the main reason the G8 has a 6-speed is just to keep up with the Joneses.
     
  20. you know me

    you know me OT where the douchbags play

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    dude, no. I'm going to try and not just call you a fucking moron and move on with my life. It's saturday night, gas is fucking expensive, so my ass is home tonight and I'm bored. OK, let me see if I can help you out here. On the GM MN6 here's what happens the first four gears are your primary drive gears using any different number of gear sets for your acceleration. 5th and 6th are not for accleration, they are for gas millage. I've lost track of if they still do this or not, but I know for the c4-5 vettes and the same year f-bodies 5th was always .65:1 and .5:1 was your 6th gear. This is where ford dropped, and still drops the ball. They need to drop a 6 speed into the GT mustang. Anyway, there ya go
     
  21. cnred

    cnred New Member

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    i wish they had 6 speed option on the GT also
     
  22. you know me

    you know me OT where the douchbags play

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    option my ass, it needs to be stock
     
  23. herpes

    herpes OT Supporter

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    you are fucking retarded. they've put 6 speed manuals in everything, why would they go back to a 5 speed?
     
  24. cheesesauce

    cheesesauce RAPE RAPE RAPE RAPE RAPE RAPE RAPE RAPE RAPE RAPE

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  25. SilverTurtle

    SilverTurtle New Member

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    this is still the correct ratios and you are correct, Ford is still dropping the ball on this issue... they continue to say that the GT gets "good enough" mileage out of the 5spd, when that really just means that the engine probably got worse gas mileage when they put the six speed on in testing.

    the benefits of a six speed manual are great gas mileage, power on demand acceleration and the ability to travel and high speeds with almost no wear and tear on the motor... the LS engines have huge power bands that a 4spd manual would be good with, but why be that exclusive? why not be able to choose from more gears? I've picked up a Muncie M21 before... its almost the same weight as the T56... so how is it better? and I believe we all know that an M21 was a damn near bulletproof transmission, so what would you have made better on it? made the gears out of titanium?
     

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