Previous Model: HQ
Next Model: HX
Date of Introduction
October 3, 1974
Discontinued July 1976
Produced for 21 months
Model Line Up
Monaro 2 Door Coupe
Monaro GTS 2 Door Coupe: (8WQ37)
Monaro LS 2 Door: (8WP37)
Monaro GTS Sedan: (8WQ69)
Prices at time of Introduction
Monaro LS Coupe: $4 816
Monaro GTS Coupe: $4 906
Monaro GTS Sedan: $4 804
Engines
2850 Low Compression Red 6
Option Number: L21
Engine Prefix: QE
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 2.834 litres (173 cubic inches)
Number of Cylinders: Six
Configuration: Front mounted, longitudinal, inline
Head Design: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Bendix-Stromberg single barrel downdraft type carburettor, BXUV-3
Bore and Stroke: 88.9 x 76.2mm (3.5 x 3.0 inches)
Power: 84kw (112bhp) at 4400rpm
Torque: 217Nm (160lbs/ft) at 2000rpm
Compression Ratio: 8.3:1
2850 High Compression Red 6
Option Number: LD1
Engine Prefix: QD
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 2.834 litres (173 cubic inches)
Number of Cylinders: Six
Configuration: Front mounted, longitudinal, inline
Head Design: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Bendix-Stromberg single barrel downdraft type carburettor, BXUV-3
Bore and Stroke: 88.9 x 76.2mm (3.50 x 3.00 inches)
Power: 88kw (118bhp) at 4400rpm
Torque: 228Nm (168lbs/ft) at 2000rpm
Compression Ratio: 9.4:1
3300 Low Compression Red 6
Option number: L23
Engine Prefix: QM
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 3.310 litres (202 cubic inches)
Number of Cylinders: Six
Configuration: Front mounted, longitudinal, inline
Head Design: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Bendix-Stromberg single barrel downdraft type carburettor, BXUV-3
Bore and Stroke: 92.1 x 82.6mm (3.625 x 3.25 inches)
Power: 96kw (129bhp) at 4400rpm
Torque: 258Nm (190lbs/ft) at 2000rpm
Compression Ratio: 7.8:1
3300 High Compression Red 6
Option number: L20
Engine Prefix: QL
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 3.310 litres (202 cubic inches)
Number of Cylinders: Six
Configuration: Front mounted, longitudinal, inline
Head: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Bendix-Stromberg twin barrel single downdraft type carburettor, BXUV-3
Bore and Stroke: 92.1 x 82.6mm (3.625 x 3.25 inches)
Power: 101kw (135bhp) at 4400rpm
Torque: 263Nm (194lbs/ft) at 2000rpm
Compression Ratio: 9.4:1
4.2L V8 Low Compression
Option Number: L33
Engine Prefix: QS
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 253 cubic inches (4.146 litres)
Number of Cylinders: Eight
Configuration: Front mounted, longitudinal, Vee configuration
Head: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Twin barrel Bendix-Stromberg carburettor, WW
Bore and Stroke: 92.1 x 77.8mm (3.625 x 3.062 inches)
Power: 130kw (174bhp) at 4400rpm
Torque: 335Nm (247lbs/ft) at 2400rpm
Compression Ratio: 8.0:1
4.2 V8 High Compression
Option Number: L32
Engine prefix: QR
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 4.149 litres (253 cubic inches)
Number of Cylinders: Eight
Configuration: Front mounted, longitudinal, Vee configuration
Head Design: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Twin barrel Bendix-Stromberg carburettor, WW
Bore and Stroke: 92.1 x 77.8mm (3.625 x 3.062 inches)
Power: 138kw (185bhp) at 4400rpm
Torque: 355Nm (262lbs/ft) at 2400rpm
Compression Ratio: 9.0:1
5.0 V8
Option Number: L31
Engine Prefix: QT
Type: Conventional, watercooled four stroke, reciprocating piston type
Capacity: 5.035 litres (308 cubic inches)
Number of cylinders: Eight
Configuration: Front mounted, longitudinal, Vee configuration
Head Design: Pushrod and rocker actuated overhead valves with two valves per cylinder
Fuel System: Four barrel Rochester Quadrajet type carburettor, 4MV
Bore and Stroke: 101.6 x 77.8mm (4.00 x 3.00 inches)
Power: (250bhp) at 4000rpm
Torque: (320lbs/ft) at 3000rpm
Compression Ratio: 9.7:1
Transmissions
Manual
3 Speed Manual Transmission
6 cylinder
M15
Column shift
1st: 3.07:1
2nd: 1.68:1
3rd: 1.00:1
Reverse: 3.59:1
4 Speed Manual Transmission
4.2 litre V8
M20
Floor shift
1st: 3.05:1
2nd: 2.19:1
3rd: 1.51:1
4th: 1.00:1
Reverse: 3.05:1
4 Speed Manual Transmission
308 V8
M21
Floor shift
1st: 2.54:1
2nd: 1.83:1
3rd: 1.38:1
4th: 1.00:1
Reverse: 2.54:1
4 Speed Manual Transmission
6 Cyl Commercial
M22
Floor shift
1st: 3.74:1
2nd: 2.68:1
3rd: 1.68:1
4th: 1.00:1
Reverse: 3.72:1
Automatic
3 Speed Tri-Matic Automatic Transmission
Six cylinder and 253 V8
M40
Column or floor shift
1st: 2.31:1
2nd: 1.46:1
3rd: 1.00:1
Reverse: 1.85:1
3 Speed Turbo-Hydramatic 400 Automatic Transmission
308 V8
M41
Column or floor shift
1st: 2.48:1
2nd: 1.48:1
3rd: 1.00:1
Reverse: 2.08:1
Rear Axle Ratios
GM-H Large Salisbury
Option Number: GU7
Ratio: 2.78:1
GM-H Banjo or Large Salisbury
Option Number: GU4
Ratio: 3.08:1
GM-H Banjo or Large Salisbury
Option Number: GV4
Ratio: 3.36:1
GM-H Banjo or Large Salisbury
Option Number: GV7
Ratio: 3.55:1
GM-H Banjo
Option Number: GU8
Ratio: 3.90:1
GM-H Large Salisbury
Option Number: GM9
Ratio: 4.44:1
LSD optional
Option Number: G80
Standard Applications
2.85 litre Six cylinder three speed manual transmission:
Standard: 3.55:1
Performance: 3.90:1
Economy: 3.36:1
2.85 litre Six cylinder four speed wide-ratio manual transmission:
Standard: 3.55:1
Performance: 3.90:1
Economy: 3.36:1
2.85 litre Six cylinder Tri-matic automatic transmission:
Standard: 3.08:1
Performance: 3.55:1
3.3 litre Six cylinder three speed manual transmission:
Standard: 3.55:1
Economy: 3.36:1
3.3 litre Six cylinder four speed manual transmission:
Standard: 3.55:1
Economy: 3.36:1
3.3 litre Six cylinder four speed wide-ratio manual transmission:
Standard: 3.55:1
Economy: 3.36:1
3.3 litre Six cylinder Tri-matic automatic transmission:
Standard: 3.08:1
Performance: 3.55:1
4.2 litre three and four speed manual transmission:
Standard: 3.08:1
Performance: 3.36:1
4.2 V8 Tri-matic automatic transmission:
Standard: 2.78:1
Performance: 3.08:1
5.0 litre V8 “High Performance” four speed manual transmission:
Standard: 3.36:1
Performance: 3.55:1
Economy: 3.08:1
5.0 litre V8 Turbo-Hydramatic automatic transmission (excluding GTS):
Standard: 2.78:1
Performance: 3.08:1
5.0 litre V8 Turbo-Hydramatic automatic transmission (GTS only):
Standard: 3.08:1
Economy: 2.78:1
Clutch
Single dry plate. Belleville diaphragm spring, Mechanical cable operation, connected directly to pull fork throw out lever
Chassis
Unitary construction (Monocoque)
Suspension
Front: Independent SLA type, coil springs, stabiliser bar and direct acting tubular telescopic shocks.
Rear: Live axle, four link system with coil springs and direct acting shocks.
Steering
Recirculating ball type,
Optional power assisted variable ratio with hydraulic pump available to all models
Brakes
Front: Hydraulic 10.9 inch (276mm) power assisted ventilated discs
Rear: Hydraulic 10.0 inch (254mm) drums
Electrical
12 volt with coil and distributer ignition
Exhaust
Single exhaust pipe six cylinder, dual exhaust V8
Wheels
Short spoke steel disc wheels: 5.00JJ x 14
Tyres
Monaro LS: E78 L14 4 P/R
Monaro GTS: ER14 (Radial)
Exterior Dimensions (Sedan)
Total Length: 4839mm (190.5 inches)
Total Width: 1875mm (73.8 inches)
Total Height: 1379mm (54.3 inches)
Wheelbase: 2819mm (111.0 inches)
Kerb Weight: 1325kg (2921lb)
Turning Circle: Sedans: 11.9 metres (39ft), Wagons: 12.2 metres (40ft)
Fuel Tank Capacity: 72.7 litres (16.0 gallons)