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LC Torana 1969 - 1971

Model Code Body Engine
Torana
Torana S
Torana SL
Torana Deluxe
82211
82411
82611
82811
two-door
two-door
two-door
two-door
four
four
four
four
Torana S
Torana SL
Torana Deluxe
82469
82669
82869
four-door
four-door
four-door
four
four
four
Torana S
Torana SL
Torana Deluxe
Torana GTR
Torana XU-1
82311
82511
82711
82911
82911
two-door
two-door
two-door
two-door
two-door
six
six
six
six
six
Torana S
Torana SL
Torana Deluxe
82369
82569
82769
four-door
four-door
four-door
six
six
six
Torana S
Torana SL
Torana GTR
Torana XU-1
Sports
Sports Luxury
Grand Touring Racing
Grand Touring Racing (Race Version)
Holden VIN plate: attached to right hand side radiator panel assembly.
ADR compliance plate: attached to right-hand side of ledge under bonnet.
 The engines for the LC Torana
138ci
Capacity / Displacement:138ci (2250cc) 
6 cylinder inline OHV, cast iron block/head 
Bendix Stromberg single barrel downdraught carburettor. 
Bore & Stroke: 3.125" (79.4mm) X 3.00" (76.2mm). 
Power output: 95bhp (70.9kW) @ 4600rpm. 
Torque: 120 lb/ft (162Nm) @ 1600rpm. 
Compression ratio: 9.2:1 
(Trimatic in parenthesis)
Max speed 89 mph

161ci
Capacity / Displacement: 161ci (2640cc). 
6 cylinder inline OHV, cast iron block/head 
Bendix Stromberg single barrel downdraught carburettor 
Bore & Stroke: 3.375" (85.7mm) X 3.00" (76.2mm). 
Power output: 114bhp (85kW) @ 4400rpm. 
Torque: 157 lb/ft (211.9Nm) @ 2000rpm. 
Compression ratio:  9.2:1 
Standing quarter mile 19 seconds
Max. speed 95 Mph

161s GTR  $2778
Capacity / Displacement: 161ci (2640cc). 
6 cylinder inline OHV, cast iron block/head 
Bendix Stromberg WW2 dual barrel downdraught carburettor with automatic choke. 
Bore & Stroke: 3.375" (85.7mm) X 3.00" (76.2mm). 
Power output:  125bhp (93.2kW) @ 4800rpm. 
Torque: 150 lb/ft (202.5Nm) @ 2800rpm. 
Compression ratio:  9.2:1 
Standing quarter mile 17.2 seconds
Max. speed 105 Mph
9.5 imperial gallon fuel tank
Gearbox  ratios: 
1st - 3.43       32mph (51km/h) max. 
2nd - 2.16      56mph (56km/h) max. 
3rd - 1.37       90mph (145km/h) max.
4th - 1.00       105mph (169km/h) max. 
Final drive ratio 
3.08:1  (LSD) 
Quarter mile time 17.4sec 

Camshaft Specifications GTR 161s
 Inlet (No ramp)
 Open 23° 
 Close 45° 
 Duration 240° 
 Lift .338" (8.58mm) 
 Exhaust
 Open 50° 
 Close 10° 
 Duration  240° 
 Lift .338" (8.58mm) 
 Overlap  25° 

186 XU-1 only
Capacity / Displacement: 186ci (3048cc) 
6 cylinder inline OHV, castiron block/head 
larger inlet & exhaust valves, V8 valve springs. 
3 X Stromberg 1.5" 150cds single barrel sidedraft  carburettors. 
Bore & Stroke: 3.625" (92.1mm) X 3.00" (76.2mm). 
Power output: 160bhp (119.36kW) @ 5200rpm. 
Torque: 190 lb/ft (256.5Nm) @ 3600rpm. 
Compression ratio:  10.05:1 
Top speed 125mph (201km/h) 
Quarter mile time of 16.0 
0-100km/h time of 8.9sec. 
Power to weight ratio of 147bhp/ton. 
1st - 36mph (58km/h) 
2nd - 58mph (93km/h) 
3rd - 93mph (150km/h) 
4th - 126mph (202km/h) 

Camshaft Specifications GTR XU-1 186 Aug 1970. 
 Inlet (No ramp) 
 Open  29° 
 Close  57° 
 Duration  266° 
 Lift  .345" (8.76mm) 
 Exhaust 
 Open 64° 
 Close 24° 
 Duration 266° 
 Lift .345" (8.76mm) 
 Overlap 53° 

186 XU-1 Bathurst.
Capacity / Displacement: 186ci  (3048cc). 
6 cylinder inline OHV, castiron block/head 
larger inlet & exhaust valves, V8 valve springs. 
3 X Stromberg 1.5" 150cds single barrel sidedraft  carburettors. 
Bore & Stroke: 3.625" (92.1mm) X 3.00" (76.2mm). 
Power output: 180bhp (134.2kW) @ 6000rpm. 
Torque: 195 lb/ft (263.2Nm) @ 4200rpm. 
Compression ratio: 10.05:1 

Camshaft Specifications GTR XU-1 186 Bathurst Sept 1970.
Inlet  (No ramp) 
Open 23° 
Close 65° 
Duration 268° 
Lift .345" (8.76mm) 
Exhaust 
Open 58° 
Close 30° 
Duration 268° 
Lift .345" (8.76mm) 
Overlap 53° 

Camshaft Specifications GTR XU-1 186 Bathurst Feb 1971.
Inlet (No ramp) 
Open 38° 
Close 86° 
Duration 304° 
Lift .429" (10.89mm) 
Exhaust 
Open 77° 
lose 46° 
Duration 304° 
Lift .429" (10.89mm) 
Overlap 84° 

*Automatic in ( )

Performance 2250 (138) 2600 (161) 2600 (161s)
Top Speed
Max 3rd Gear
Max 2nd Gear
Max 1st Gear
89mph (89mph)
89mph (89mph)
68mph (75mph)
34mph (48mph)
92mph
76mph
50mph
30mph
105mph
90mph
56mph
32mph
0-30mph
0-40mph
0-50mph
0-60mph
0-70mph
0-80mph
5.2sec (5.2)
8.8sec (7.8)
12.5sec (12.2)
17.6sec (16.3)
25.0sec (21.8
35 sec
4.6sec
6.8sec
11.0sec
15.3sec
21.3sec
29.0sec
3.5sec
5.3sec
7.5sec
10.6sec
13.9sec
18.9sec
Standing 1/4 19.8 sec (21.0) 19.0 sec 17.2 sec
Fuel Consumption 30 mpg 30.4 mpg 28 mpg
The rest of the car
Development thanks go to
Bill Steinhagen (Chief Engineer)
Assistant engineer Reg Hall.
Styling Burn Ambbler and Phil Zmood.

Transmissions.
The LC brought with it a new automatic that was unique in the way it could be 'held' in gear and so it could be useful on hills both up and down, this was called the Trimatic.  The LC also came with both three speed column shift and four speed manual floor shifts although the four speed was an Opel unit and was not suitable for the extra power output. 
Four-cylinder; four-speed manual or three-speed automatic, all are floor change.
Six-cylinder; three-speed manual column shift; three-speed manual floor shift (export only)
XU1, four-speed manual floor shift; three-speed automatic floor or column shift.

Suspension.
The LC Torana had a quality of ride and handling like no other Australian assembled car before it. This included independent front suspension with lower and upper ball joints as well as coil springs outside oil filled shock absorbers plus rack and pinion steering made it precise and controllable in almost any situation.  The rear suspension for the the first time on a six cylinder comprised of a four link live axle setup, this setup used coil springs outside oil filled shock absorbers.  The six cylinder models were heavier in the front cross member and differential than the four cylinder models. 
 

This shows the drum brake front end from the LC range with the vastly improved suspension geometry to allow precise handling. The drawback however was the heavy feel at low speeds.
Differential.
The six cylinder models had a banjo differential with optional LSD (Limited Slip Differential) as an option for all ratios. 
Ratios :  2.78, 3.08, 3.36, 3.55. 

Brakes.
The standard Torana six came with 9" twin servo four wheel drum brakes but with the option of 10"  front disks with a power assisted booster on the S and SL.  The GTR was fitted with front disks and booster as standard. 

Wheels/Tyres.
Standard fitment were 4.50JJ X 13" steel rims and cross-ply tires with centre hub caps. 
The GTR's were fitted with 5.50JJ X 13" steel rims as standard and B70H13 red band high performance tires.  The GTR rims could be optioned on any six cylinder Torana. 

Interior.
  The seats were a little bouncy over and not up with the rest of handling package, they were still used to cars without direct steering and good handling.  Two door models had a lever that had to be pushed which allowing the seat backs to fold forward.  Vinyl was the normal for cars of  the day however the GTR came with cloth inserts.   The SL and GTR had slightly better in the design of there  seats.  The SL also had the option of a cloth on the front of the seats.  A bench seat was available only on the four door Torana with column shift.  Carpet was an option on the S, and standard on the SL.  The S came with rubber floor mats.  The GTR had the best looking interior even with it's six GTR badges. 

Instrumentation.
The instrument cluster came in any colour as long as it was black and had two large recessed circular gauges with the one on the left containing an analogue fuel level gauge, and warning lights for generator, oil pressure and water temperature. The gauge on the right hand side included a speedo which read to 100mph (160km/h), odometer, and high beam warning light. 
GTR models came with the two large circular recesses (Tachometer and Speedo) and also with four small surrounding recesses ammeter, fuel gauge, oil pressure, water temperature. 
 

The GTR models needed the gauges so when driven hard you were able to keep an eye on the key instruments. These were also used in other models. The XU-1 dash is seen in many cars of the era these days.

 
The 4-cylinder was not a favourite for many although it gave respectable performance it was no match to the Japanese or European vehicles coming into Australia at the time. 4 cylinder options continued right through the years and the current crop or very highly developed cars shows the value of economical cars.
Tune-up Details
138 - 161 - 161s Engine:
Firing order........................ 153624
Spark plug gap mm............ .965
Spark plug gap inches........ .038
Breaker gap mm................ .431 - .482 
Breaker gap inches............ .017 - .019 
Cam angle Bosch............... 30 - 35
Ignition timing BTDC..........   5 degrees
Fuel Pump pressure kPa....  21 - 27.5 (3-4 psi)
Comp @ crank speed kPa.   827 (120 psi) hot
Radiator cap pressure.......   89kPa (13psi)
Cetrifugal advance.
Engine idle speed............... 500 rpm
161s Engine idle speed....... 600 rpm
Starts deg. rpm Bosch........ 0 @ 600
Starts deg. rpm Lucas........  0 @ 500
138 Full deg. rpm................ 26 @ 3800
161 - 161s Full deg. rpm...... 33 @ 3800
Vacuam advance starts......  127-178mm (5-7") Bosch
Vacuam advance starts......  38-178mm (1.5-7") Lucas
Max. vacuam advance deg @ mm (inches)
11-15 @ 228.6mm-264  (11-15 @ 9-10.5)
Torque settings.
Cylinder head Nm (lbs)......   102 (75)
Con rods Nm (lbs)............... 27 - 35 (20 - 26)
Main bearings Nm (lbs).....    81 - 95 (60 - 70)
Flywheel Nm (lbs)............... 61 - 74 (45 - 55)

186 - 186s Engine:
Firing order........................ 153624
Spark plug gap mm............ .838 - .965
Spark plug gap inches........ .033 - .038
Breaker gap mm................ .431 - .609
Breaker gap inches............ .017 - .024
Cam angle ..........................30 - 35
Ignition timing BTDC........     7+-1 degrees
Fuel Pump pressure kPa....   21 - 31 (3-4.5 psi)
Comp @ crank speed kPa.   930 (135 psi) hot
Radiator cap pressure.......    89kPa (13psi)
Cetrifugal advance.
Engine idle speed............... 500 rpm (550-600 186s)
Starts deg. rpm Bosch........ 0 @ 600
Starts deg. rpm Lucas........  0 @ 500
Full deg. rpm....................... 33 @ 3800
Vacuam advance starts......  127-178mm (5-7") Bosch
Vacuam advance starts......  38-178mm (1.5-7") Lucas
Max. vacuam advance deg @ mm (inches)
11-15 @ 228.6mm  (11-15 @ 9)
Torque settings.
Cylinder head Nm (lbs)......    102 (75)
Con rods Nm (lbs)...............  27 - 35 (20 - 26)
Main bearings Nm (lbs).....     81 - 95 (60 - 70)
Flywheel Nm (lbs)...............   61 - 74 (45 - 55)


There are still a few examples of the LC driving the streets and its great to see!


My Project Injected LC
Up to stage 2


This LC is a vary rapid 10 second street registered car.









My LC above and below at a Muscle Car drag meet.
This was its first shake down run after an engine rebuild and ran a first up 13.9@99mph, I continued to progress sorting out the tune until it was running consistent low 13's and finished with a best of 12.9 and 107mph, this was achieved with a very soft launch and on 205 Bridestone street tires. the mph indicated it should run about 12.7's with a more aggressive launch and slicks.