Welcome to the all new Holden Heaven
  Holden HQ 1971

HQ GTS - Not technically a Monaro but often called one.
 Specifications
DATE OF INTRODUCTION
July 1971. Four door sedan - March 1973

PRICES AT TIME OF INTRODUCTION
Monaro (2850 cc six & 3 speed manual) - $3120,
Monaro LS (3300 cc six & 3 speed manual) - $3570,
Monaro GTS (4.2 V8 & 4 speed manual) - $3720,
Monaro GTS 350 (5.7 V8 & 4 speed manual) - $4630

TOTAL NUMBER BUILT
Monaros: 13,782
SS Sedans: 1200 1st build (10c trim, Houndstooth)
SS Sedans: 1600 2nd build (10d trim, Raydo flax inserts)

PERFORMANCE
Monaro GTS 350
350 ci (5740 cc) V8
Final drive:3.08:1
Four speed manual
1st (2.52:1):54 mph (86.9 km/h)
2nd (1.88:1):71.9 mph (115.8 km/h)
3rd (1.46:1):94 mph (151.2 km/h)
4th (1.00:1):124.4 mph (200.3 km/h)
Elapsed time 0-100 km/h:8.0 seconds
Standing 400 metres:15.7 sec

MODELS AVAILABLE
Monaro Coupe six cylinder
Monaro Coupe eight cylinder
Monaro GTS Sedan eight cylinder
Monaro GTS Coupe eight cylinder
Monaro GTS 350 Coupe eight cylinder

ENGINES  SPECIFICATIONS
173 ci (2850cc) available in Monaro only
Six cylinder inline front mounted
OHV 2 valves per cylinder cast iron head/block
Bore and stroke:3.5 inches (85.75 mm) x 3.0 inches (88.9 mm x )
Single barrel Bendix Stromberg downdraught carburettor
Power output (DIN):118 bhp (88 kW) at 4400
Torque (DIN):168 lb/ft (226.8 Nm) at 2000
Compression ratio:9.4:1

202 ci (3300cc) Standard in LS, optional in Monaro
Six cylinder inline front mounted
OHV 2 valves per cylinder cast iron head/block
Single barrel Bendix Stromberg downdraught carburettor
Bore and stroke:3.625 inches (88.8 mm) x 3.25 inches (82.5 mm)
Power output (DIN):135 bhp (100 kW) at 4400 rpm
Torque (DIN):194 lb/ft (261.9 Nm)at 2000
Compression ratio:9.4:1

253 ci (4150cc) Standard in GTS, optional in Monaro and LS
V8 front mounted
OHV 2 valves per cylinder cast iron head/block
Twin barrel Bendix Stromberg downdraught carburettor
Bore and stroke:3.625 inches (88.8 mm) x 3.062 inches (75.0 mm)
Power output (DIN):185 bhp (138 kW) at 4400 rpm
Torque (DIN):262 lb/ft (353.7 Nm) at 2400 rpm
Compression ratio:9.0:1

308 ci (5050 cc) Optional in all models
V8 front mounted
OHV 2 valves per cylinder cast iron head/block
Four barrel Rochester downdraught carburettor
Bore and stroke:4.0 inches (101.6 mm) x 3.062 inches (75.0 mm)
Power output (DIN):240 bhp (179.0 kW) at 4800 rpm
Torque (DIN):315 lb/ft (425.2 Nm) at 3000 rpm
Compression ratio:9.0:1

350 ci (5740 cc) Optional in LS and GTS only
V8 front mounted
OHV 2 valves per cylinder cast iron head/block
Four barrel downdraught Rochester carburettor
Bore and stroke:4.0 inches (101.6 mm) x 3.480 inches (85.26 mm)
Power output (DIN):275 bhp (205.1 kW) at 4800 rpm
Torque (DIN):360 lb/ft (486 Nm) at 3200 rpm
Compression ratio:8.5:1

TRANSMISSIONS
Six cylinder and 253 V8
Three speed all synchro manual.
1st:3.07:1
2nd:1.68:1
3rd:1.00:1
Reverse:3.59:1

Six cylinder and 253 V8
Four speed all synchro manual.
1st:3.05:1
2nd:2.19:1
3rd:1.51:1
4th:1.00:1
Reverse:3.05:1

308 V8
Four speed all synchro manual.
1st:2.54:1
2nd:1.83:1
3rd:1.38:1
4th:1.00:1
Reverse:2.54:1

350 V8
Four speed all synchro manual
1st:2.52:1
2nd:1.88:1
3rd:1.46:1
4th:1.00:1
Reverse:

Three speed Trimatic automatic
1st:2.31:1
2nd:1.46:1
3rd:1.00:1
Reverse:1.85:1

Three speed Turbo Hydra-Matic 400
1st:2.48:1
2nd:1.48:1
3rd:1.00:1
Reverse:2.08:1

DIFFERENTIAL RATIOS
3.55:1
3.36:1 (standard on SS and optional on GTS)
3.08:1
2.78:1 (optional on trimatic)

SUSPENSION
Front:Independent, coil springs, upper and lower Actuating arms, anti roll bar, telescopic dampers
Rear Live axle, four link system, coil springs, telescopic dampers

BRAKES
Front:Disc. Power assisted ventilated discs standard with all V8s and LS. Optional on all other models
Rear:Drum

WHEELS
Monaro - 5.00JJx14
Monaro LS - 5.00JJx14
Monaro GTS - 6.00JKx14

DIMENSIONS
Total length (inches/mm):187.5 inches (4761 mm)
Total width (inches/mm):74.0 inches (101.6 mm) inches
Total height (inches/mm) at kerb weight:53.1 inches (1348 mm)
Wheelbase (inches/mm):111 inches (2719.5 mm)
Front track (inches/mm):60.2 inches (1529 mm)
Rear track (inches/mm):60.2 inches (1529 mm)
Fuel tank capacity:14.5 gallons (65 litres)
Kerb weight (lb/kg):
    Monaro and Monaro LS Coupe - 2950 lbs (1339.3 kg).
    Monaro GTS - 3150 lbs (1451 kg)

Turning circle kerb to kerb (inches/mm):39 ft (11.9 m)

ENGINE NUMBERS
Stamped on a pad at the front of the right hand cylinder bank.
The prefixes for the HQ GTS 350 Monaro coupe or sedan is 'QU'.

BODY/CHASSIS NUMBERS
Stamped on a plate attached to the right hand side of the firewall.
Up until October 1 1972 the first five numbers of the 13 digits was the model number.
80337 - Monaro Coupe
80437 - Monaro Coupe
80837 - Monaro GTS Coupe
81837 - Monaro GTS 350 Coupe

The next letter is the series code: Q for HQ Monaro

The next two digits are a indicating the plant where the vehicle was built
H1-H4 - Brisbane
H5-H9 - Sydney
J1-J9 - Melbourne
L1-L5 - Adelaide
L6-L9 - Perth
Next is the vehicles serial number represent the sequence in which the vehicle was built at that particular plant.

After October 1 1972 the number system was changed. The first four digits are the model number:
8P37 - Monaro LS Coupe
8Q69 - Monaro GTS Sedan
8Q37 - Monaro GTS Coupe

The next letter is the engine identification:
E - QE 173 (low compression 2850 cc)
D - QD 173 (high compression 2850 cc)
M - QM 202 (low compression 3300 cc)
L - QL 202 (high compression 3300 cc)
S - QS 253 (low compression 4.2 litre)
R - QR 253 (high compression 4.2 litre)
T - QT 308 (high compression 5.0 litre)

The next letter is the model year:
D - 1974
E - 1975
F - 1976
G - 1977
H - 1978
J - 1979

The next two digits is the assembly plant code:
H1-H4 - Brisbane
H5-H9 - Sydney
J1-J9 - Dandenong
L1-L5 - Adelaide

Next is the vehicles serial number which represents the sequence in which the vehicle was built at the particular plant. The final letter is the series code: Q for HQ

OTHER IDENTIFICATION MARKS
GTS 350 - 'GTS' and 'Monaro' badges. Headlight bezels, grille, under front and rear bumpers, along sill panels and rear of boot lid blacked out. Three horizontal louvres in lower front guards. 

 Pics