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Holden Special Vehicles unveiled a seven litre program at the 2008 Melbourne Motor Show, the last instalment of the company s 20th anniversary celebrations.

The car to be known in its final development stages as the W427 is finished in the same Panorama Silver paint scheme as the original Group A SS VL Commodore, released at the Melbourne Motor Show of 1988, exactly 20 years ago.
HSV Managing Director, Scott Grant, said the W427 was a tribute to how far the company has come in just twenty years.

A new six piston front braking system will provide a 50% increase in pad area, while the Holden W427 also receives a revised ESP calibration, six air bags, improved handling and new Magnetic Ride Control settings.

The Holden W427 receives a bimodal active exhaust system to improve noise quality and back pressure management.
Styling and design highlights include an all new front fascia, a three piece carbon fibre rear spoiler, 20 inch machined faced alloy wheel, unique exhaust tips and red leather interior.
The Holden W427 will go into production in the middle of the year and will be available for sale in dealerships in the third quarter of 2008.

Specifications
    * Exterior
          o All new Front Fascia exclusive to W427
          o All new three piece rear spoiler in carbon fibre
          o All new 20 inch wheel
    * Interior
          o HSV performance seats in full red hot trim with W427 logo, steering wheel, gear shifter and console lid in full red hot leather
    * Powertrain
          o 7.0 Litre, LS7 Engine with HSV specific calibration
                + 370kW @ 6500 rpm
                + 640Nm @ 5000 rpm
          o Over radiator style cold air induction system with high flow air filter
          o Dry sump lubrication system with 2 stage pump
          o Hand fabricated aluminium oil reservoir, with internal baffles for high G loading
          o Front mount, 13 row engine oil cooler
          o Ceramic coated, high flow four into one extractors
          o High flow catalytic converters and exhaust system (3 into 2 ¾ )
          o Active bi-modal rear mufflers for exhaust back pressure management to improve noise quality
          o High strength limited slip differential
          o New high strength six speed manual gear box (TR6060)
          o GMPT LS7 Clutch with new actuator and pedal assembly for high clamp loads
    * Suspension
          o New springs, 30% stiffer than GTS
          o Revised ride height 20mm lower than GTS
          o New stiffer rear suspension bushing
          o All new MRC calibration
    * Brakes
          o New 6 piston front braking system (50% increase in pad area)
          o Strap drive, 2 piece floating front rotors (380 x 35mm compared to 365 x 32mm one piece on GTS)
          o High friction pad material