Holden HJ Monaro Coupe and 4 Door

1974-76

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As a rush of new European models entered the market and Australians were presented with a wider range of choices in general, the HJ Monaro upgrade had to satisfy a more demanding enthusiast buyer.

Introduced in October 1974, the HJ Monaro GTS offered extra comfort, a comprehensive sports instrument panel of its own and greater emphasis on body detailing to further distinguish it from other models. Beefier HJ styling was matched by extra-strength bumpers. The four-headlight Monaro LS coupe became the new entry level Monaro and the GTS continued as a single headlight coupe or four door sedan. All HJ Monaro coupes retained the HQ's rear styling.

More imposing than its predecessor, the four door GTS featured a prominent, blacked-out grille, bigger wraparound rear lights, more aggressive side vents and decals. Full foam high-backed seats came in a variety of trims, including herringbone with a red centre stripe. The GTS instrument panel featured multiple ventilation outlets and clear recessed instruments with international symbols.

The first factory front and rear spoiler options gave the HJ GTS real presence, the deep rear spoiler and new tail lights in particular bolstering its sloping boot line. As the imported Chevrolet 350 was de-tuned to meet US anti-pollution legislation, it no longer made sense as a premium performance option. Instead, Holden boosted the compression ratio of the local 308 to close the performance gap. The automatic 308 gained the Turbo-Hydramatic 400 from the previous GTS 350.

DATE OF INTRODUCTION

October 1974

NUMBER BUILT

4,754

MODEL LINE-UP

8WQ69	Monaro GTS Sedan
	Monaro Coupe
8WP37	Monaro LS Coupe
8WQ37	Monaro GTS Coupe

PRICE AT TIME OF INTRODUCTION

Monaro GTS Four Door Sedan - $5138. Automatic transmission - $331

ENGINES SPECIFICATIONS

3300 LC (Low compression)
Capacity 202 ci (3312.8 cc)
OHV six cylinder inline, front engined, rear wheel drive
Single throat Bendix Stromberg BXV-2 downdraught carburettor
Bore and stroke 92.08 mm x 82.55 mm
Power output (DIN):96.2 kW at 4400 rpm
Torque (DIN):231 Nm at 2000 rpm
Compression ratio:7.8:1

3300 HC (High compression)
Capacity 202 ci (3312.8 cc)
OHV six cylinder inline, front engined, rear wheel drive
Single throat Bendix Stromberg BXV-2 downdraught carburettor
Bore and stroke 92.08 mm x 82.55 mm
Power output (DIN):135 bhp (100.7 kW) at 4400 rpm
Torque (DIN):190 lb/ft (231 Nm) at 2000 rpm
Compression ratio:9.4:1

4.2 litre LC (Low compression)
Capacity 253 ci (4146 cc)
OHV V8, rear wheel drive, rear wheel drive
Single two barrel Bendix Stromberg WW downdraught carburettor
Bore and stroke:92.08 mm x 77.77 mm
Power output (DIN):174 bhp (130 kW) at 4400 rpm
Torque (DIN):247 lb/ft (325 Nm) at 2400 rpm
Compression ratio:8.0:1

4.2 litre HC (High compression)
Capacity 253 ci (4146 cc)
OHV V8, rear wheel drive, rear wheel drive
Single two barrel Bendix Stromberg WW downdraught carburettor
Bore and stroke 92.08 mm x 77.77 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

5.0 litre
Capacity 308 ci (5047 cc)
OHV V8, rear wheel drive, rear wheel drive
Single four barrel Rochester 4MV Quadrajet downdraught carburettor
Bore and stroke 101.66 mm x 77.77 mm
Power output (DIN) 240 bhp (179.0 kW) at 4800 rpm
Torque (DIN) 315 bhp (434 Nm) at 3000 rpm
Compression ratio 9.0:1

TRANSMISSIONS

Three speed all synchro manual
1st:3.07:1
2nd:1.68:1
3rd:1.00:1
Reverse:3.59:1

M20 3.05:1 first 4 speed

M21 four-speed manual
Standard with GTS 4.2 and 5.0, not available in LS.
1st:2.54:1
2nd:1.83:1
3rd:1.38:1
4th:1.00:1
Reverse:2.54:1

M22 3.74:1 first 4 speed

M40 Three speed Trimatic automatic
Standard with 3300 LS, not available with GTS
1st:2.48:1
2nd:1.48:1
3rd:1.00:1
Reverse:2.48:1

M41 Three speed Turbo Hydra-Matic '400' automatic
Standard with 4.2 and 5.0 in LS, optional with 4.2 and 5.0 on GTS
1st:2.48 :1
2nd:1.48 :1
3rd:1.00 :1
Reverse:2.48:1

ENGINE/TRANSMISSION COMBINATIONS

Trimatic transmission standard with 3300 engine on LS, not available with GTS.
Four speed manual standard on GTS with 4.2 and 5.0, not available on LS.
Hydra-Matic standard with 4.2 and 5.0 on LS, optional with 4.2 and 5.0 on GTS

PERFORMANCE WHEN NEW

Model:Monaro GTS Four Door Sedan
Engine:5.0 V8 Final drive:2.78:1
Top speeds in gears - Three speed automatic
1st (2.48:1):70 km/h 2nd (1.48:1):110 km/h 3rd (1.00:1):182 km/h
Elapsed time 0-100 km/h:10.4 seconds
Standing 400 metres:17.9 seconds

REAR AXLE RATIOS

G70 2.60:1
GU4 3.08:1
GU7 2.78:1

GV4 3.36:1
GV7 3.55:1

BRAKES

Front:Power assisted discs
Rear:Power assisted discs

WHEELS

6.00Jx14
7.00JJx14 optional on GTS

TYRES

Monaro LS - E78L14
Monaro GTS - ER70H14

INSTRUMENTS/CONTROLS

Monaro LS - Speedo, fuel gauge, water temperature.
Monaro GTS - Speedo, tacho, water temperature, oil pressure, ammeter

EXTERIOR DIMENSIONS:

Total length (inches/mm):187.5 inches (4850 mm)
Total width (inches/mm):74.0 inches (1813 mm)
Total height (inches/mm) at kerb weight:Monaro and LS - 53.1 inches (1301 mm). GTS and
Wheelbase (inches/mm):111.0 inches (2719.5 mm)
Kerb weight (lb/kg):Coupe - 1425 kg. Sedan - 1441 kg

TURNING CIRCLE

39 ft (11.9 m))

FUEL TANK CAPACITY

Coupe - 66 litres
Sedan - 75 litres

ENGINE NUMBERS

Six cylinder - Located right side of block above mounting.
V8s - Top left of block.

BODY/CHASSIS NUMBERS

Located right side front of frame.

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
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

The next five numbers is the vehicle serial number

The final letter is the series code:
J for HJ

OTHER IDENTIFICATION MARKS

Monaro LS - Protruding mesh grille with badge in centre. Dual circular headlights and parklights/indicators on side. Body side protection moulding, black rubber strip on bumper. Chrome headlights surrounds.
Monaro GTS Coupe - As for Monaro LS except single headlight and black bezels, GTS badge in centre of grille, three slot vent in front guard.
Monaro GTS Sedan - As for Coupe.