HDT Brock Commodore VK Technical Specifications

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HDT VK Brock Commodore
Holden Color Codes A - L
Holden Color Codes A - L
Holden Color Codes M -Z
Holden Color Codes M -Z
  • Years of Manufacture: 1984 - 1986
  • Number Built: 700
    • Group Three: 200
    • Group A: 500
    • Other HDT specials were also made
  • Models:
    • HDT Commodore SS
    • HDT Commodore SS Group Three
    • HDT Commodore SS Group A
    • Calais Director
    • Commodore SL
    • Berlina
  • Date(s) of Introduction:
    • SS and SS Group Three:August 28, 1984
    • Group A: March, 1985
    • Calais Director: February 15, 1985
  • To Identify:
    • Group Three: HDT letterbox grille panel and optional large rearward opening bonnet bulge; flatter rear spoiler, side skirts, optional wind-splitters fitted to top of front guards, available in white or silver only
    • Group A: HDT letterbox grille panel more shapely than previous Group Three model, no bonet bulge, more prominent rear spoiler
    • Group Three: Front air-dam but no side or rear skirts in standard form, available in blue only
    • Calais Director: color coded front and rear bumpers, solour coded side moulds, HDT "We Build Excitement" decal, HDT alloy wheels
  • Body:
    • Unitary construction (Monocoque)
  • Exterior Dimensions:
    • Total Length: 4714mm
    • Total Width: 1722mm
    • Total Height at kerb weight: 1378mm
    • Wheelbase: 2668mm
    • Front Track: 1451mm
    • Rear Track: 1416mm
    • Kerb Weight: 1390kg
  • Turning Circle:
    • 10.2 metres
  • Fuel Tank Capacity:
    • Group Three: 90 liters
    • Group A: 63 liters
  • Instruments:
    • Addition of Tachometer, Momo leather-bound steering wheel, Momo leather gear shift knob
  • Group Three:
    • Capacity: 5.044 liter
    • Type: Conventional, watercooled four stroke, reciprocating piston type with 8 cylinders
    • Configuration: Front mounted, longitudinal, Vee configuration
    • Head: Pushrod and rocker actuated ohv with two valves per cylinder
    • Fuel System: Rochester Quadrajet 4 barrel downdraft type carburetor
    • Bore and Stroke: 101.6 x 77.8mm
    • Power: 177kW at 4800rpm
    • Torque: 419Nm at 3500rpm
    • Compression Ratio: 9.2:1
  • Group A :
    • Capacity: 4.987 liter
    • Type: Conventional, watercooled four stroke, reciprocating piston type with 8 cylinders
    • Configuration: Front mounted, longitudinal, Vee configuration
    • Head: Pushrod and rocker actuated ohv with two valves per cylinder
    • Fuel System: Rochester Quadrajet 4 barrel downdraft type carburetor
    • Bore and Stroke: 101.6 x 76.8mm
    • Power: 196kw at 5200rpm
    • Torque: 418Nm at 3600rpm
    • Compression Ratio: 8.8:1
  • Ignition and Electrical:
    • 12 volt negative ground
  • Exhaust:
    • 5.0 liter V8: Single piece cast iron left and right cylinder banks, one outlet per bank.
    • 5.0 liter V8 V5H: Low restriction exhaust system with white heat-proof coated headers
  • 4 speed M21 Manual Transmission:
    • 1st: 2.54:1
    • 2nd: 1.83:1
    • 3rd: 1.38:1
    • 4th: 1.00:1
    • Reverse: 2.54:1
  • 5 speed Borg-Warner T-5 Manual Transmission:
    • 1st: 2.95:1
    • 2nd: 1.94:1
    • 3rd: 1.34:1
    • 4th: 1.00:1
    • 5th: 0.73:1
    • Reverse: 3.15:1
  • 3 speed Automatic Transmission:
    • 1st: 2.48:1
    • 2nd: 1.48:1
    • 3rd: 1.00:1
    • Reverse: 2.08:1
  • Clutch:
    • Single dry plate diaphram spring actuation type
    • Torque converter on Group Three Automatic
  • Rear Axle Ratio: 3.08:1
  • Top Speed in Gears:
    • Group Three 4 speed manual:
      • 1st: 77 km/h
      • 2nd: 107 km/h
      • 3rd: 142 km/h
      • 4th: 210 km/h
      • 0-100 km/h: 7.6 seconds
      • Standing Quarter Mile (400 metres): 15.7 seconds
    • Group Three 3 speed automatic:
      • 1st: 85 km/h
      • 2nd: 142 km/h
      • 3rd: 210 km/h
      • 0-100 km/h: n/a
      • Standing Quarter Mile (400 metres): n/a
    • Group A 4 speed manual:
      • 1st: 87 km/h
      • 2nd: 121 km/h
      • 3rd: 161 km/h
      • 4th: 215 km/h
      • 0-100 km/h: 7.0 seconds
      • Standing Quarter Mile (400 metres): 15.0 seconds
  • Suspension:
    • Front: Fully independent, MacPherson struts with coil springs and anti-roll bar. Group A and Group Three have Bilstein strut inserts and dampers, heavy duty stabiliser bar; Calais Director has Bilstein front strut inserts
    • Rear: Live axle located by trailing arms and Panhard rod. Coil springs and anti-roll bar; Group A, Group Three and Calais Director have HDT rear stabiliser kit
  • Steering:
    • Power assisted rack and pinion, ratio 15.8:1
    • Turns lock-to-lock: 3.3
  • Brakes:
    • Split circuit system with power booster
    • Front: 281mm vented discs
    • Rear: 281mm discs
  • Wheels:
    • SS, Group Three, SL and Berlina: 7.0 inch x 15.0 inch HDT Alloys
    • Group A: 7.0 inch x 16.0 inch HDT Alloys
    • Calais Director: 7.0 inch x 15.0 inch with Aero covers
  • Tyres:
    • SL and Berlina: Uniroyal Wildcat 225/60 15
    • SS: Uniroyal ER60H15 Wildcat Steel Radials
    • Group Three: Pirelli P6 235/60 VR15; from February 1985 Pirelli P7 225/60 VR 16
    • Group A: Bridgestone Potenza 225/50 VR16

Also see:
HDT VK Brock Director Brochure

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