SPECIFICATIONS

On this page you will find details of:

• The meaning of engine numbers
• Engine specifications
• Clutch specifications
• Transmission specifications
• Suspension, Steering, Wheel & Brake specifications
• General dimensions
• Performance data



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THE MEANING OF
ENGINE NUMBERS

Prefix

Serial No

Suffix

Meaning

LE

 

 

US Federal specification

LD

 

 

All other engines

 

1 onwards

 

1970 pre-production and 1971 model year Mk 1 cars

 

10001 onwards

 

1972 and some 1973 model year Mk 1 cars

 

20001 onwards

 

1973 and some 1974 model year Mk 2 cars

 

30001 onwards

 

1974 & 1975 model year Mk 2 cars

 

40001 onwards

 

1976 & 1977 model year Mk 2 cars

 

 

HE

High compression engine

 

 

HEA

High compression engine for Borg-Warner Type 65 automatic gearbox

 

 

HEBW

High compression engine for Borg-Warner Type 35 automatic gearbox

 

 

UE

US Federal engine

 

 

UEBW

US Federal engine for Borg-Warner Type 35 automatic gearbox

Notes:

1) Model years ran from autumn to autumn meaning that the 1971 model year ran
    from autumn 1970 to autumn 1971.



ENGINE SPECIFICATIONS

Type

Front longitudinally mounted engine driving rear wheels, 90° V8 with five-bearing cast-iron block and aluminium alloy cylinder heads with overhead valves and one overhead camshaft per cylinder bank.

Bore & Stroke

Bore - 3.385 in (86 mm), Stroke - 2.539 in (64.5 mm)

Displacement

2997cc (182.9 cu in)

Compression Ratio

LF HE engines to number 20000
LF HE engines from 20001 on
LE UE engines to 20000
LE UE engines from 20001 on

8.80:1
9.25:1
8.00:1
7.75:1

Carburettors

Engines to number 20000
Engines from 20001 on

2 x Zenith-Stromberg 175CD
2 x Zenith-Stromberg 175CDS(E)V

Firing Order

1 - 2 - 7 - 8 - 4 - 5 - 6 - 3
RH bank Nos 1 - 3 - 5 - 7
LH bank Nos 2 - 4 - 6 - 8

Cylinders are numbered from the front of the engine.
Banks are identifed from the rear of the engine.

Valves

2 per cylinder, operated by single overhead camshaft for each bank .

Power Produced

LF HE engines to number 20000
LF HE engines from 20001 on
LE UE engines to 20000
LE UE engines from 20001 on

145bhp @ 5,500rpm
146bhp @ 5,700rpm
127bhp @ 6,000rpm
127bhp @ 5,500rpm

Torque Produced

LF HE engines to number 20000
LF HE engines from 20001 on
LE UE engines to 20000
LE UE engines from 20001 on

170 Ibs/ft @ 3,500rpm
167 Ibs/ft @ 3,500rpm
142 Ibs/ft @ 3200rpm
148 Ibs/ft @ 3500rpm



CLUTCH SPECIFICATIONS

Type

Laycock diaphragm type, single dry plate.

Operation

Hydraulic

Driven plate

Diameter - 9 in (22.86 cm)
Damper springs - 6



TRANSMISSION SPECIFICATIONS

Manual

Type

4 forward speeds, all-synchromesh

Ratios

First
Second
Third
Fourth
Reverse

2.995:1
2.100:1
1.386:1
1.000:1
3.369:1

Overdrive

Laycock de Normanville Type A, operative on 3rd and top gears

Ratios

Third
Fourth

1.130:1
0.82:1

Overdrive

Laycock de Normanville Type J, operative on 3rd and top gears

Ratios

Third
Fourth

1.100:1
0.79:1


Automatic

Type

Borg Warner 35

Ratios

First
Second
Third
Reverse

2.390:1
1.450:1
1.000:1
2.090:1

Converter Reduction

Infinitely variable between 1:10 and 1:20

Type

Borg Warner 65

Ratios

First
Second
Third
Reverse

2.390:1
1.450:1
1.000:1
2.090:1

Converter Reduction

Infinitely variable between 1:10 and 1:91


Final Drive

Type

Hypoid bevel gears, 3.700:1



SUSPENSION, STEERING,
WHEEL & BRAKE SPECIFICATIONS

Front suspension

Independent strut type suspension with coil springs and telescopic hydraulic damper units. Single lower transverse links with fore and aft location by leading radius rods. Coil springs seat on noise insulating washers. Rubber bushed pivots and special wear resistant ball joint swivels. Anti-roll bar.

Rear suspension

Semi-trailing arm independent suspension mounted on rubber insulated steel sub-frame. Coil springs seat on noise insulating washers


Steering

Power assisted rack and pinion type.

Steering wheel

3 spoke alloy with padded rim and centre boss. The Mk 1 steering wheel was 16 inches (406 mm) in diameter while the Mk2 was reduced to 14½ inches (368 mm). Some late cars had the slots in the spokes filled with black rubber. The steering column is adjustable by approximately 4 inches (102mm) axially and 2 inches (51mm) vertically and incorporates an anti-theft locking device.


Road wheels

Standard wheel size was 14 inches. Up to the end of the 1975 model year steel disc type wheels with 5J flat hump safety ledge rims, fitted with stainless steel trims, were standard on non-Federal cars. The spaces between the spokes on trims for Mk 1 wheels were painted black, on Mk 2 wheels they were left as polished metal. Five-spoke alloy wheels were standard on Federal cars from commission number LE 20272, prior to which 48-spoke centre-lock wire wheels had been standard fitment. The wire wheels had been an option on non-Federal cars up to mid-1975. From commission number LD 40001, built in October 1975, the five-spoke alloy wheels became standard. Reproduction alloy wheels have the valve between two spokes while on the originals it was in the centre of a spoke. Wheel nuts used with the alloy wheels were also made of alloy with a concave head: up to the end of the 1975 model year they were finished in silver but for 1976 and 1977 the finish became satin black. Reproduction wheel nuts have a domed head.


Steel wheel



Mk 1 wheel trim



Mk 2 wheel trim



Wire wheel, eared spinner



Wire wheel, octagonal spinner



Original alloy wheel & wheel nuts



Reproduction alloy wheel & wheel nuts




Brakes

Front
Rear

Servo

10⅞ inch (270 mm) diameter disc brakes
9 inch diameter leading and trailing shoe self-adjusting drum brakes
3:1 boost ratio



GENERAL DIMENSIONS

Wheelbase

 

8 ft 4 in (2540 mm)

Track

Front:
Rear:

4 ft 4½ in (1330 mm)
4 ft 4⅞ in (1342 mm)

Ground clearance

 

4 in (102 mm)

Turning circle

 

34 ft (10.4 m)

Overall Dimensions

Length:
Width:
Height (top of screen):
Height (soft top erect):

14 ft 5¾ in (4420 mm)
5 ft 3½ in (1612 mm)
4 ft 0 in (1220 mm)
4 ft 1½ in (1258 mm)

Weights (approx)

Dry (excluding extra equipment):
Basic kerb (inc tools, fuel, oil & water):
Kerb (inc optional extras):
Gross vehicle weight (max):

23½ cwt (1200 kg)
25 cwt (1275 kg)

27 cwt (1375 kg)
33½ cwt (1700 kg)

Capacities

Petrol:
Engine sump:
Engine oil filter:
Gearbox (from dry):
Rear axle (from dry):
Power steering reservoir
Cooling system (with heater)

14 gallons (63½ litres)
8 pints (4½ litres)
1 pint (0.56 litres)
2¼ pints (1.3 litres)
2 pints (1.1 litres)
1¼ pints (0.7 litres)
18½ pints (10.5 litres)



PERFORMANCE DATA

Acceleration (based on pre-production test car figures)

  0-30 mph through gears
  0-40 mph through gears
  0-50 mph through gears
  0-60 mph through gears
  0-70 mph through gears
  0-80 mph through gears
  0-90 mph through gears
0-100 mph through gears

20-40 mph in top gear
30-50 mph in top gear
40-60 mph in top gear
50-70 mph in top gear
60-80 mph in top gear
70-90 mph in top gear
80-100 mph in top gear

  3.5 seconds
  5.0 seconds
  7.0 seconds
  9.5 seconds
12.5 seconds
16.0 seconds
21.5 seconds
29.0 seconds

  7.5 seconds
  7.5 seconds
  7.5 seconds
  8.0 seconds
  8.5 seconds
10.0 seconds
13.0 seconds

Maximum speed

118 mph (190 kph) depending on conditions