Holden VL Commodore SS Group A SV

Holden VL Commodore SS Group A SV

The Holden Commodore VL SS Group A SV was a vehicle developed and built for Holden by TWR and the newly established Holden Special Vehicles company. Released in 1988, it was based on the Holden Commodore VL SS. 750 examples were built, meeting the minimum requirement of 500 units necessary to allow the model to be homologated for racing under international Group A Touring Car regulations. It replaced the existing Holden Commodore VL SS Group A (which had been developed by Peter Brock's HDT Special Vehicles company} as Holden's Group A race car.

Due to its high use of plastic in the bodykit, it was termed such things as the "Plastic Pig". Other, less derogatory nicknames included the "Walkinshaw" and the most common of all, "Walky" (after TWR's chief Tom Walkinshaw).

With the requirements of Group A regulations, Holden had to have a car capable of being competitive 'straight off the showroom floor'. Thus it needed a bodykit that would produce large amounts of downforce as well as being low drag. TWR developed the famous Walkinshaw bodykit that was stated to reduce drag by more than 25% over the previous Holden Dealer Team (HDT) Group A.

Some people however, say that the bodykit is a direct cause of the so called 'brick wall effect' at about 250-260 km/h.

The engine in the Group A SV, although rated at 5 litres and convert|180|kW|hp|0|abbr=on, was specially made to withstand racing conditions. The block was specially cast and crankcase was fitted with 4 bolt main bearing caps. The heads were revised with high-flow intake ports and roller rockers.

Special connecting rods, crankshafts, and pistons were fitted as well as a custom exhaust, however the big news was the now fabled Walkinshaw twin throttle body inlet manifold. This was specially developed for the group A, featuring a sequental setup with a smaller and larger throttle body. This was fitted with a restrictor plate on the larger, secondary throttle body, which actually let less air through than the smaller throttle body. Some reports have indicated that as much as 50-60 horsepower can be gained from the removal of the restrictor plates.

The Group A SV was made as a limited run of 500 from March 1988 to November the same year, but HSV decided to make 250 more due to demand. These were slow to sell, some examples only being sold several years after the VL ceased production, and many were resprayed black as opposed to the silver that originally donned the car, in an effort to get them out of the show rooms.

References

* "Australian Muscle Car", Issue 13

External links

* http://www.hsv.com.au/cars/classics/hsv12pp.pdf
* http://www.walkinshaw.net/history/history.html
* http://www.uniquecarsandparts.com.au/brochures_holden_vl_commodore_walkinshaw.htm


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Holden VN Commodore — Manufacturer Holden Also called Holden VG Utility Holden VN Berlina Holden VN Calais Toyota VN Lexcen Pr …   Wikipedia

  • Holden VP Commodore — Infobox Automobile name = Holden VP Commodore aka = manufacturer = Holden parent company = General Motors production = September 1991–July 1993 assembly = predecessor = Holden VN Commodore successor = Holden VR Commodore class = Full size… …   Wikipedia

  • Holden VL Commodore — Infobox Automobile name = Holden VL Commodore aka = Holden VL Calais manufacturer = Holden parent company = General Motors production = February 1986–August 1988 assembly = Elizabeth, South Australia, Australia predecessor = Holden VK Commodore… …   Wikipedia

  • Holden VK Commodore — Infobox Automobile generation name = Holden VK Commodore aka = manufacturer = Holden parent company = General Motors predecessor = Holden VH Commodore successor = Holden VL Commodore class = Mid size platform = FR GM V platform body style = 4… …   Wikipedia

  • Holden Special Vehicles — Type Private Industry Automotive Founded 1988 Founder(s) Tom Walkinshaw …   Wikipedia

  • Holden Commodore — Manufacturer Holden Also called Holden Berlina Holden Calais Production …   Wikipedia

  • Holden Monaro — Manufacturer Holden Production 1968–1977 2001–2005 Body style …   Wikipedia

  • Holden Dealer Team — HDT Manufacturer Holden, later BMW Ford Team Principal Harry Firth (69 77), John Sheppard (78 79), Peter Brock (80 93) Team Manager Harry Firth (69 77), John Sheppard (78 79), Peter Brock (80 81), Grant Spears (82 86), Graham Browne (87), Alan… …   Wikipedia

  • Holden — GM Holden Ltd Тип отделение General Motors с 1931 Год основания 1856 Расположение …   Википедия

  • Holden — Infobox Company company name = GM Holden Ltd company company type = Private foundation = 1856 location = Port Melbourne, Victoria, Australia key people = Mark Reuss Chairman and Managing Director industry = Automotive products = Automobiles… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”