Triumph Stag Vehicle Information


Triumph Stag

Key Dates for Stag Production
These figures are reproduced from the book ‘Original Triumph Stag - The Restorer’s Guide’ with the kind permission of MBI Publishing Co & James Taylor. Note: Rate of production varied because Stags were built in small batches, it is therefore important to use caution when attempting to date a car from these figures. LD is Triumph code for all Non-Federal Stags. LE is Triumph code Federal Stags from approx. 1972, early Federal cars had LD prefix.

Commission Number Production Date/Year Production Remarks
LD1 14th November 1969 First 'off-tools' car
TD2 12th February 1970 Second 'off-tools' car
LD3 13th March 1970 First line built car
LD748 1st January 1971 First car built in 1971
LD1001¹ 4th November 1971 First 'second-sanction' car
LD3900² 9th November 1971 Last 'first-sanction' car
LD10760 3rd January 1972 First car built in 1972
LD20001 17th October 1972 First 'third-sanction' car
LD14581 10th November 1972 Last 'second-sanction' car
LD21087³ 2nd January 1973 First car built in 1973
LD30001 14th September 1973 First 'fourth-sanction' car
LD25432 22nd November 1973 Last ‘third-sanction’ car
LD31153 4th January 1974 First car built in 1974
LD34617 2nd January 1975 First car built in 1975
LD40001 4th September 1975 First ‘fifth-sanction’ car
LD36714 18th September 1975 Last ‘fourth-sanction’ car
LD40809 5th January 1976 First car built in 1976
LD42366* 4th August 1976 First car built on Innsbruck line
LD43908 4th January 1977 First car built in 1977
LD45722 24th June 1977 Very Last Stag
1: The earliest build record found in this sequence is actually for car 10004.
2: Build sanctions always overlapped. Thus, the first cars with the specification agreed for the 'second-sanction' (e, 1972 models) started coming off the lines before orders for 'first-sanction' cars had been fulfilled.
3: The last Stag eligible for road tax exemption under current UK regulations is therefore LD21086.
*: Until August 1976, Stags were built in batches on the TR6 production lines. When TR6 production ended, Stag production was transferred to the Innsbruck line (2000/2500 Saloon) production lines.


Production figures
These figures are reproduced from the book 'Original Triumph Stag - The Restorer's Guide' with the kind permission of MBI Publishing Co. & James Taylor, they are based on surviving records compiled and originated by Anders Clausager of the 'British Motor Industry Heritage Trust' at Gaydon.

Year/Season Gearbox Types Home Market Export Market Total
1970 Manual 358 30 388
Automatic 342 10 352
Sub Total for 1970 700 40 740
1971 Manual 1291 1221 2512
Automatic 699 690 1389
Sub Total for 1971 1990 1911 3901
1972 Manual 2015 432 2447
Automatic 1490 567 2057
Sub Total for 1972 3505 999 4504
1973 Manual 1511 1138 2649
Automatic 1683 1176 2859
Sub Total for 1973 3194 2314 5508
1974 Manual 1327 405 1732
Automatic 1279 431 1710
Sub Total for 1974 2606 836 3442
1975 Manual 935 440 1375
Automatic 1051 472 1523
Sub Total for 1975 1986 912 2898
1976 Manual individual build figures are not availible.
Automatic individual build figures are not available.
Sub Total for 1976 2466 644 3110
1977 Manual 501 112 613
Automatic 871 352 1223
Sub Total for 1977 1372 464 1836
Total Production Figures 17,819 8,120 25,939


Location of Commission & Serial Numbers
The illustration shows where the various identification/serial numbers are located on the Stag. Triumph Stag Illustration

1. Commission Number

2. Body Number

3. Engine Number

4. Gearbox Number

5. Differential number



Commission Numbers
All Stags are identified by a unique commission number, which is found on a metal plate attached to the left hand door shut pillar. This plate is a vital piece of evidence reference the cars original build specification for a number of reasons.

Firstly, the commission number itself will reveal the approximate date of manufacture. On Federal cars, the month and year of manufacture are actually stamped on the plate (for all models the actual day of of completion can be determined for a small fee by contacting the; ‘Heritage Motor Centre’ Gaydon on +44 1926 641188). Second the commission number tells you what transmission was fitted originally. Third, the plate is stamped with a pair of two or three-digit codes that identify the original paint & trim colours.

The commission number is stamped into the plate. A typical example would be LD 31205 BW. This can be broken down into three elements;
Prefix (LD), Serial Number (31205), and suffix (BW).

Commission Prefix Letters LD Triumph code for all Non-Federal Stags. 1972, early Federal cars had LD prefix
  LE Triumph code Federal Stags from approx. 1972
Commission Serial Numbers 1 to 3900 1971 Mk1 models. (Pre-production cars built during the 1970 model year were also numbered in this sequence.)
  10001 to 14158 1972 Mk1 models. (Sales records exist for Federal cars in the sequence LE 7502 to LE8901, but build records for these cars have not been found.)
  20001 to 25432 1973 Mk2 models.
  30001 to 36714 1974 & 1975 Mk2 models.
  40001 to 45722 1976 & 1977 Mk2 models
Commission Suffix Letters Manual 'box with O/drive was not allocated an identifying suffix.
  A Type 65 auto gearbox
  BW Type 35 auto gearbox
  K Kph speedo on Rhd cars
  KA Kph speedo with type 65 box
  KBW Kph speedo with type 35 box except USA
  LA Lhd with type 65 box
  LBW Lhd with type 35 box
  LO Lhd with overdrive
  O Overdrive
  U USA Federal specification
  UBW USA Federal with type 35 box
  UO USA Federal with overdrive


A small plate attached to the front body crossmember beside the LH bonnet hinge carries the body number, it is of no value whatsoever when ordering spares. Body numbers begin at ‘T 001 LD’ and do not match commission numbers, though in most cases they are very close. Body No sequence is as follows, only start numbers are given as final numbers are not known.

T 001 LD 1971-1972 Mk1 models. (Inc pre-production cars built in the 1970 model year.)
T 20001 LD 1973 Mk2 models.
T 30001 LD 1974-1975 Mk2 models.
T 40001 LD 1976-1977.


On early engines the engine number is stamped on a cast-boss between the two rearmost spark plugs on the LH cyl bank. From October 1971 it is stamped at the back of the cylinder block - between the distributor and the bellhousing. A typical example would be LF 11246 HE. This breaks down into 3 elements; Prefix (LF), Serial number (11246), Suffix (HE).

Engine Prefix Letters  
LF All markets except USA
LE USA Federal specification
Engine Suffix Letters  
HE High compression
HEA High comp' for type 65 Auto
HEBW High comp' for type 35 Auto
UE USA Federal specification
UEBW USA Federal with type 35 box


Transmission
Manual Gearbox - Manual gearboxes are stamped with a serial No beginning LD1. This sequence was used for all gearboxes except on US Federal cars: 1972 season US gearboxes began with LE 10001, and 1973 season US gearboxes with LE 20001.

Auto Gearbox - The serial number of the Borg-Warner auto gearbox is stamped on the makers plate attached to the gearbox casing. 'Type 35' gearboxes have a purple plate, and 'type 65's' have a green plate.

Differential - Diff/axle numbers are stamped on the underside of the rear casing. They are all in the same series, which begins with LS1.

Dimensions Length 4420mm
  Width 1612mm
  Height (with hood erected) 1258mm
  Wheelbase 2540mm
Track Front 1330mm
  Rear 1340mm
Weights All weights are approx. Kerb (Basic) 1250kg
  With Optional Extras (Typical) 1282kg
  With Hard-Top (Factory) 1355kg


Engine Settings
Firing Order 1, 2, 7, 8, 4, 5, 6, 3
No. 1 cylinder front RH bank. (RH bank odd, LH bank even no's) (RH & LH as viewed from drivers seat.)
Spark plug type N12Y
Spark plug gap 0.61mm-0.66mm
Contact breaker gap 0.36mm-0.41mm
Rotation (Distributor) Anti-clockwise (Viewed from top of rotor arm.)
Dwell angle;
Single points distributor 26° - 28°
Twin points distributor 29.5° - 33.5°
USA models 34° - 38°
Ignition timing - static;
Pre Eng' LF20000 14° BTDC
From Eng' LF20000 12° BTDC
USA models 10° BTDC
Ignition timing - dynamic
Pre Eng' LF20000 14° BTDC
From Eng' LF20000 12° BTDC
Idle speed (Neutral/Hot) 650 - 850 Rpm
Fast idle speed (Cold) 1100 - 1300 Rpm
Idle mixture (% CO) 2.0% - 4.0%
Inlet valve clearance (Cold) 0.15mm - 0.20mm
Exhaust valve clearance (Cold) 0.41mm - 0.46mm


Engine
Sump pan only 8 imp' pints (4.55 litres)
Including oil filter 9 imp' pints (4.12 litres)
Cooling system (Inc heater) 18.5 imp' pints (10.5 litres)
Fuel Tank
Pre 1973 RHD models 14 imp' gall's (63.5 litres)
1973 on & 72 LHD models 12.75 imp' gall's (58.0 litres)
Transmission
Manual gearbox 2.88 imp' pints (1.6 litres)
With "A" type overdrive 3.75 imp' pints (2.13 litres)
With "J" type overdrive 3.5 imp' pints (2.0 litres)
Type 35 auto (Inc oil cooler) 14.25 imp' pints (8.0 litres)
Type 65 auto (Inc oil cooler) 9.5 imp' pints (5.4 litres)
Differential 2.0 imp' pints (1.13 litres)
Power steering 1.25 imp' pints (0.7 litres)
Tyre pressures (Standard wheels/tyres, all loadings.)
Front (cold) 26 Psi
Rear (cold) 30 Psi

Triumph Stag Vehicle Information


Triumph Stag

Key Dates for Stag Production
These figures are reproduced from the book ‘Original Triumph Stag - The Restorer’s Guide’ with the kind permission of MBI Publishing Co & James Taylor. Note: Rate of production varied because Stags were built in small batches, it is therefore important to use caution when attempting to date a car from these figures. LD is Triumph code for all Non-Federal Stags. LE is Triumph code Federal Stags from approx. 1972, early Federal cars had LD prefix.

Commission Number Production Date/Year Production Remarks
LD1 14th November 1969 First 'off-tools' car
TD2 12th February 1970 Second 'off-tools' car
LD3 13th March 1970 First line built car
LD748 1st January 1971 First car built in 1971
LD1001¹ 4th November 1971 First 'second-sanction' car
LD3900² 9th November 1971 Last 'first-sanction' car
LD10760 3rd January 1972 First car built in 1972
LD20001 17th October 1972 First 'third-sanction' car
LD14581 10th November 1972 Last 'second-sanction' car
LD21087³ 2nd January 1973 First car built in 1973
LD30001 14th September 1973 First 'fourth-sanction' car
LD25432 22nd November 1973 Last ‘third-sanction’ car
LD31153 4th January 1974 First car built in 1974
LD34617 2nd January 1975 First car built in 1975
LD40001 4th September 1975 First ‘fifth-sanction’ car
LD36714 18th September 1975 Last ‘fourth-sanction’ car
LD40809 5th January 1976 First car built in 1976
LD42366* 4th August 1976 First car built on Innsbruck line
LD43908 4th January 1977 First car built in 1977
LD45722 24th June 1977 Very Last Stag
1: The earliest build record found in this sequence is actually for car 10004.
2: Build sanctions always overlapped. Thus, the first cars with the specification agreed for the 'second-sanction' (e, 1972 models) started coming off the lines before orders for 'first-sanction' cars had been fulfilled.
3: The last Stag eligible for road tax exemption under current UK regulations is therefore LD21086.
*: Until August 1976, Stags were built in batches on the TR6 production lines. When TR6 production ended, Stag production was transferred to the Innsbruck line (2000/2500 Saloon) production lines.


Production figures
These figures are reproduced from the book 'Original Triumph Stag - The Restorer's Guide' with the kind permission of MBI Publishing Co. & James Taylor, they are based on surviving records compiled and originated by Anders Clausager of the 'British Motor Industry Heritage Trust' at Gaydon.

Year/Season Gearbox Types Home Market Export Market Total
1970 Manual 358 30 388
Automatic 342 10 352
Sub Total for 1970 700 40 740
1971 Manual 1291 1221 2512
Automatic 699 690 1389
Sub Total for 1971 1990 1911 3901
1972 Manual 2015 432 2447
Automatic 1490 567 2057
Sub Total for 1972 3505 999 4504
1973 Manual 1511 1138 2649
Automatic 1683 1176 2859
Sub Total for 1973 3194 2314 5508
1974 Manual 1327 405 1732
Automatic 1279 431 1710
Sub Total for 1974 2606 836 3442
1975 Manual 935 440 1375
Automatic 1051 472 1523
Sub Total for 1975 1986 912 2898
1976 Manual individual build figures are not availible.
Automatic individual build figures are not available.
Sub Total for 1976 2466 644 3110
1977 Manual 501 112 613
Automatic 871 352 1223
Sub Total for 1977 1372 464 1836
Total Production Figures 17,819 8,120 25,939


Location of Commission & Serial Numbers
The illustration shows where the various identifiation/serial numbers are located on the Stag.

Triumph Stag Illustration

1. Commission Number

2. Body Number

3. Engine Number

4. Gearbox Number

5. Differential number



Commission Numbers
All Stags are identified by a unique commission number, which is found on a metal plate attached to the left hand door shut pillar. This plate is a vital piece of evidence reference the cars original build specification for a number of reasons.

Firstly, the commission number itself will reveal the approximate date of manufacture. On Federal cars, the month and year of manufacture are actually stamped on the plate (for all models the actual day of of completion can be determined for a small fee by contacting the; ‘Heritage Motor Centre’ Gaydon on +44 1926 641188). Second the commission number tells you what transmission was fitted originally. Third, the plate is stamped with a pair of two or three-digit codes that identify the original paint & trim colours.

The commission number is stamped into the plate. A typical example would be LD 31205 BW. This can be broken down into three elements;
Prefix (LD), Serial Number (31205), and suffix (BW).

Commission Prefix Letters LD Triumph code for all Non-Federal Stags. 1972, early Federal cars had LD prefix
  LE Triumph code Federal Stags from approx. 1972
Commission Serial Numbers 1 to 3900 1971 Mk1 models. (Pre-production cars built during the 1970 model year were also numbered in this sequence.)
  10001 to 14158 1972 Mk1 models. (Sales records exist for Federal cars in the sequence LE 7502 to LE8901, but build records for these cars have not been found.)
  20001 to 25432 1973 Mk2 models.
  30001 to 36714 1974 & 1975 Mk2 models.
  40001 to 45722 1976 & 1977 Mk2 models
Commission Suffix Letters Manual 'box with O/drive was not allocated an identifying suffix.
  A Type 65 auto gearbox
  BW Type 35 auto gearbox
  K Kph speedo on Rhd cars
  KA Kph speedo with type 65 box
  KBW Kph speedo with type 35 box except USA
  LA Lhd with type 65 box
  LBW Lhd with type 35 box
  LO Lhd with overdrive
  O Overdrive
  U USA Federal specification
  UBW USA Federal with type 35 box
  UO USA Federal with overdrive


A small plate attached to the front body crossmember beside the LH bonnet hinge carries the body number, it is of no value whatsoever when ordering spares. Body numbers begin at ‘T 001 LD’ and do not match commission numbers, though in most cases they are very close. Body No sequence is as follows, only start numbers are given as final numbers are not known.

T 001 LD 1971-1972 Mk1 models. (Inc pre-production cars built in the 1970 model year.)
T 20001 LD 1973 Mk2 models.
T 30001 LD 1974-1975 Mk2 models.
T 40001 LD 1976-1977.


On early engines the engine number is stamped on a cast-boss between the two rearmost spark plugs on the LH cyl bank. From October 1971 it is stamped at the back of the cylinder block - between the distributor and the bellhousing. A typical example would be LF 11246 HE. This breaks down into 3 elements; Prefix (LF), Serial number (11246), Suffix (HE).

Engine Prefix Letters  
LF All markets except USA
LE USA Federal specification
Engine Suffix Letters  
HE High compression
HEA High comp' for type 65 Auto
HEBW High comp' for type 35 Auto
UE USA Federal specification
UEBW USA Federal with type 35 box


Transmission
Manual Gearbox - Manual gearboxes are stamped with a serial No beginning LD1. This sequence was used for all gearboxes except on US Federal cars: 1972 season US gearboxes began with LE 10001, and 1973 season US gearboxes with LE 20001.

Auto Gearbox - The serial number of the Borg-Warner auto gearbox is stamped on the makers plate attached to the gearbox casing. 'Type 35' gearboxes have a purple plate, and 'type 65's' have a green plate.

Differential - Diff/axle numbers are stamped on the underside of the rear casing. They are all in the same series, which begins with LS1.

Dimensions Length 4420mm
  Width 1612mm
  Height (with hood erected) 1258mm
  Wheelbase 2540mm
Track Front 1330mm
  Rear 1340mm
Weights All weights are approx. Kerb (Basic) 1250kg
  With Optional Extras (Typical) 1282kg
  With Hard-Top (Factory) 1355kg


Engine Settings
Firing Order 1, 2, 7, 8, 4, 5, 6, 3
No. 1 cylinder front RH bank. (RH bank odd, LH bank even no's) (RH & LH as viewed from drivers seat.)
Spark plug type N12Y
Spark plug gap 0.61mm-0.66mm
Contact breaker gap 0.36mm-0.41mm
Rotation (Distributor) Anti-clockwise (Viewed from top of rotor arm.)
Dwell angle;
Single points distributor 26° - 28°
Twin points distributor 29.5° - 33.5°
USA models 34° - 38°
Ignition timing - static;
Pre Eng' LF20000 14° BTDC
From Eng' LF20000 12° BTDC
USA models 10° BTDC
Ignition timing - dynamic
Pre Eng' LF20000 14° BTDC
From Eng' LF20000 12° BTDC
Idle speed (Neutral/Hot) 650 - 850 Rpm
Fast idle speed (Cold) 1100 - 1300 Rpm
Idle mixture (% CO) 2.0% - 4.0%
Inlet valve clearance (Cold) 0.15mm - 0.20mm
Exhaust valve clearance (Cold) 0.41mm - 0.46mm


Engine
Sump pan only 8 imp' pints (4.55 litres)
Including oil filter 9 imp' pints (4.12 litres)
Cooling system (Inc heater) 18.5 imp' pints (10.5 litres)
Fuel Tank
Pre 1973 RHD models 14 imp' gall's (63.5 litres)
1973 on & 72 LHD models 12.75 imp' gall's (58.0 litres)
Transmission
Manual gearbox 2.88 imp' pints (1.6 litres)
With "A" type overdrive 3.75 imp' pints (2.13 litres)
With "J" type overdrive 3.5 imp' pints (2.0 litres)
Type 35 auto (Inc oil cooler) 14.25 imp' pints (8.0 litres)
Type 65 auto (Inc oil cooler) 9.5 imp' pints (5.4 litres)
Differential 2.0 imp' pints (1.13 litres)
Power steering 1.25 imp' pints (0.7 litres)
Tyre pressures (Standard wheels/tyres, all loadings.)
Front (cold) 26 Psi
Rear (cold) 30 Psi