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High Flying Rally XU1 in 1972

3962
Counting since August 2004



Welcome to the all new Holden Heaven
This site was first established in 1999
HT Monaro
The HT Monaro came on the back of the successful HK and uses the same body with some slight alterations to the cosmetics. It used the same engines except for the top of the range Chev powered model with an increase in cubic size from 327 to 350. There were other subtle changes but Holden knew they were onto a winner and gave these cars plenty of options across the range of models available. One of most noticeable and good changes was the rev counter was now mounted where it should have been in the first place.
 
 Engines

161 LC
161 cid  6 cylinder inline, (2640cm3 low compression engine)
Bore and stroke:3.375 inches (85.7 mm) x 3.00 inches (76.2 mm)
OHV with hydraulic lifters, single camshaft
Single barrel downdraught Bendix Stromberg carburettor
Power output (DIN):108 bhp (80.6 kW) at 4400 rpm
Torque (DIN):146 lb/ft (197 Nm) at 2000 rpm
Compression ratio:8.2:1

161 HC
161 cid 6 cylinder inline, (2640 cm3 high compression engine)
Bore and stroke:3.375 inches (85.7 mm)  x 3.00 inches (76.2 mm)
OHV with hydraulic lifters, single camshaft
Single barrel downdraught Bendix Stromberg carburettor
Power output (DIN):114 bhp (85 kW) at 4400 rpm
Torque (DIN):157 lb/ft (211.9 Nm) at 2000 rpm
Compression ratio:9.2:1

186
186 cid - 6 cylinder inline (3050 cc)
Bore and stroke:3.625 inches (92.1 mm) x 3.00 inches (76.2 mm)
OHV with hydraulic lifters, single camshaft
Single barrel downdraught Bendix Stromberg carburettor
Power output (DIN):126 bhp (94 kW) at 4200 rpm
Torque (DIN):181 lb/ft (244.3 Nm) at 1600 rpm
Compression ratio:9.2:1

186s
186 cid - 6 cylinder inline (3050 cc)
Bore and stroke:3.625 inches (92.1 mm) x 3.00 inches (76.2 mm)
OHV with hydraulic lifters, single camshaft
Two barrel downdraught Bendix Stromberg with automatic choke
Power output (DIN):145 bhp (108.2 kW) at 4600 rpm
Torque (DIN):184 lb/ft (248.4 Nm) at 2200 rpm
Compression ratio:9.2:1

253 V8
253 cid (4149 cc)
Bore and stroke:3.625 inches (88.8 mm) x 3.062 inches (75.0 mm)
OHV with hydraulic lifters, single camshaft
Twin barrel Bendix Stromberg carburettor
Power output (DIN):185 bhp (138 kW) at 4400 rpm
Torque (DIN):262 lb/ft (353.7 Nm) at 2400 rpm
Compression ratio:9:1

307 V8 (5 litre Chevrolet)
307 cid V8  (5035 cc)
Bore and stroke:3.875 inches (98.4 mm) x 3.25 inches (82.5 mm)
OHV with hydraulic lifters, single camshaft
Two barrel Rochester downdraught carburettor with automatic choke
Power output (DIN):210 bhp (156.7 kW) at 4600 rpm
Torque (DIN):300 lb/ft (405 Nm) at 2400 rpm
Compression ratio:8.75:1

350 V8 (Chevrolet)
350 cid V8 (5740 cc)
Bore and stroke:4.0 inches (101.6 mm) x 3.480 inches (85.26 mm)
OHV with hydraulic lifters, single camshaft
Rochester four barrel Quadrajet downdraught carburettor with automatic choke
Power output (DIN):300 bhp (223.8 kW) at 4800 rpm (manual)
Power output (DIN):275 bhp (205.1 kW) at 4800 rpm (auto)
Torque (DIN):380 lb/ft (513 Nm) at 3200 rpm (manual)
Torque (DIN):365 lb/ft (492 Nm) at 3200 rpm (auto)
Compression ratio:10.25:1 (manual)
Compression ratio:9.0:1 (auto)

 General Facts
Release date
May 1969

Number built
14,437 

Models
Monaro Coupe (6 & V8)
Monaro GTS Coupe (6 & V8)
Monaro GTS 350 Coupe

Prices at time of release
Monaro - $2651, 
Monaro GTS - $3423
Monaro GTS 350 - $3995

Options
V8 over 186 - $462
Automatic - $210
Four speed  - $90
Four speed heavy duty over three speed - $180
LSD - $40
Power discs - $55
Power drums - $34
Power steering - $125

Transmissions and ratios
Three-speed manual
(Synchro in 2nd & 3rd)
1st:2.99:1
2nd:1.59:1
3rd:1.00:1
Reverse:2.99:1

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

Four-speed all synchro manual
1st:3.428:1
2nd:2.156:1
3rd:1.366:1
4th:1.00:1
Reverse:3.17:1

Four-speed all synchro manual (M21)
1st:2.54:1
2nd:1.80:1
3rd:1.44:1
4th:1.00:1
Reverse:2.54:1

Four-speed all synchro manual (M22)
1st:2.85:1
2nd:2.02:1
3rd:1.35:1
4th:1.00:1
Reverse:2.85:1

Powerglide automatic
Low:1.76:1
High:1.00:1
Reverse:1.76:1

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

Rear axle ratios
3.55:1 recommended on six cylinder models with three speed transmission
3.08:1 recommended on 253 V8 models
3.36:1 recommended on six cylinder models with four speed or automatic transmissions
2.78:1 recommended on 253 and 307 V8s with automatic transmission
Limited slip diff optional on all models

Dimensions
Length - 4699mm, Width - 1816mm, Wheelbase - 2819mm

Weight
1,300kg, 1,333kg (GTS), 1,495kg (GTS 327)

Fuel Tank
75 litres, 114 litres (GTS 327)

Engine numbers
Located on a pad near the front of the right hand cylinder bank. The prefixes for the HK GTS 327 Monaro is '327'. The engine serial number follows.

Body/chassis numbers
Located on a plate attached to the right hand side of the firewall. 

The first five numbers is the model number.
80337 - Monaro Coupe
80437 - Monaro Coupe
80737 - Monaro GTS Coupe Six Cylinder
80837 - Monaro GTS Coupe V8
81837 - Monaro GTS 327 Coupe

The next letter is the model code: K for HK Monaro 

The next two digits are a letter/number combination indicating the plant at which the vehicle was built
H1-H4 - Brisbane
H5-H9 - Sydney
J1-J9 - Melbourne
L1-L5 - Adelaide
L6-L9 - Perth

The remaining five numbers is the vehicle serial number represent the sequence in which the vehicle was built at that particular plant.

The author has researched extensively but accepts no
responsibility if some details are incorrect. Holden Heaven November 1999