2019 Shannons Melbourne Summer Classic Auction

1984 Holden HDT Improved Brock VK SS Commodore Sedan




Engine 5Lt V8
Gearbox Four-speed manual
Body Work Sedan
Colour Alpine White
Interior Cerulean Blue
Trim Cloth
Wheels Cast alloy (HDT Aero)
Brakes Disc/disc


This lot is no longer available

Regarded by many as the most desirable Brock Commodore of all, the HDT VK was initially launched on August 28, 1984 with two models, the SS and Group Three - the Group A and other variants like the Calais Director arrived down the track. Available in two colours, Asteroid Silver and Alpine White, both models gained an aggressive body kit featuring large front and rear spoilers, side skirts and a new grille - a bonnet scoop and splitters on the front wings were also popular options - along with 16-inch alloy rims featuring Pirelli P7s. All HDT SS/Group Three cars featured the same light blue cloth upholstery, with sports Scheel bucket seats, a Momo steering wheel and HDT gearstick knob, plus a Brock signature 40watt sound system and Cobra burglar alarm. Under the bonnet, HDT’s latest muscle car featured a tuned 5-litre V8 with a four-barrel carburettor, developing 177 kW at 4800 rpm and 419 Nm of torque at 3500 rpm. With enlarged cylinder head ports and gas-flowed combustion chambers, the V8 was also treated to larger inlet and exhaust valves. HDT offered at choice of three transmissions – a three-speed auto box, the M21 four-speed with the option of Borg-Warner’s T-5 five-speed, with a 3.08 limited slip differential. The Group Three suspension package consisted of Bilstein shock absorbers and a front sway bar. Although official build figures for the SS aren’t known, just 200 Group Three and 500 Group A VK Commodores were made by HDT. Performance figures remained impressive, with 0-100 km/h taking 7.6 seconds and the quarter mile dash some 14.9 seconds. As the period ads said, “Body by Holden. Soul by Brock.”