- 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:
- 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
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- 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:
- 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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