Type
4/5S EST
Number of doors
5
Wheelbase
2690 mm 105.9 in
Track: Front
1332 mm 52.4 in
Track: Rear
1342 mm 52.8 in
Length
4528 mm 178.3 in
Width
1710 mm 67.3 in
Height
1438 mm 56.6 in
Length:wheelbase ratio
1.68
Ground clearance
120 mm 4.7 in
Kerb weight
1340 kg 2954 lb
Fuel capacity
64 litres 14.1 UK Gal 16.9 US Gal
Bore
74.70 mm
Cylinders
S-6
Displacement
2.5 litre2498 cc(152.437 cu in)
Compression ratio
8.50:1
Fuel system
2 SU HS4 carburettors
Maximum power
107.5 PS (106 bhp) (79 kW)@ 4700 rpm
Specific output
42.4 bhp/litre0.7 bhp/cu in
Maximum torque
189.0 Nm (139 ft·lb) (19.3 kgm)@ 2750 rpm
bmep
950.8 kPa (137.9 psi)
Specific torque
75.66 Nm/litre
Manufacturer
Triumph
Main bearings
4
Coolant
Water
Bore/stroke ratio
0.79
Unitary capacity
416.33 cc/cylinder
Aspiration
Normal
Compressor type
N/A
Intercooler
None
Catalytic converter
N
Power-to-weight
79.1 bhp/ton
Engine location
Front
Engine alignment
Longitudinal
Drive
RWD
Steering
rack & pinion PAS
Suspension
front
Tyres: Front
175 HR 13
Tyres: Rear
175 HR 13
Brakes F/R
Di/Dr-S
Transmission
4 speed manual with overdrive
Top gear ratio
0.80
Final drive ratio
3.45
RAC rating
20.8
year
1977