1987 TVR 420 SEAC

The 420 SEAC is a rear wheel drive convertible/cabriolet road car with a front located engine, sold by TVR. Its 8 cylinder, overhead valve naturally aspirated engine has 2 valves per cylinder and a volume of 4.2 litres. This unit produces power and torque figures of 300 bhp (304 PS/224 kW) at 5500 rpm and 393 Nm (290 lbft/40.1 kgm) at 4500 rpm respectively. The engine delivers its power through to the wheels via a 5 speed manual 'box. Stated weight at the kerb is 1170 kg. The TVR 420 SEAC is said to be able to manage a maxiumum speed of 266 km/h which is 165 mph.

Pictures

Key facts

1987 TVR 420 SEAC information summary

What body style?
2 door convertible/cabriolet with 2 seats
How long?
4013 mm
How heavy?
1170 kg
What size engine?
4.2 litre, 4226 cm3
How many cylinders?
8, V
How much power?
304 PS / 300 bhp / 224 kW @ 5500 rpm
How much torque?
393 Nm / 290 ft.lb / 40.1 kgm @ 4500 rpm
How quick?
0-60 mph: 5 s
How fast?
266 km/h, 165 mph

TVR 420 models

TVR 420 Sports Saloon -
2 door fixed-head coupé FR 5M 4230 cm3 269 PS 265 bhp 198 kW

Similar models

Aston Martin Zagato Volante -
2 door convertible/​cabriolet FR 5M 5341 cm3 309 PS 305 bhp 227 kW 1681 kg
2 door convertible/​cabriolet FR 3A 5341 cm3 309 PS 305 bhp 227 kW
1987 TVR 420 SEAC data
bodywork
Body type2 seater convertible/cabriolet
Number of doors2
Designer
dimensions & weights
mminches
Wheelbase 2388 mm 94 inches
Track/tread (front) 1468 mm 57.8 inches
Track/tread (rear) 1478 mm 58.2 inches
Length 4013 mm 158 inches
Width 1727 mm 68 inches
Height 1207 mm 47.5 inches
Ground clearance
length:wheelbase ratio 1.68
Kerb weight 1170 kg 2579 lb
Weight distribution
fuel tank capacity 59 litres 13 UK Gal 15.6 US Gal
aerodynamics
Drag coefficient
Frontal area
CdA
engine
engine type naturally aspirated petrol
Engine manufacturer Rover (TVR modified)
Engine code
Cylinders V 8 in 90° vee
Capacity 4.2 litre
4226 cc
(257.886 cu in)
Bore × Stroke 93.4 × 77.1 mm
3.68 × 3.04 in
Bore/stroke ratio 1.21
Valve gear overhead valve (OHV)
2 valves per cylinder
16 valves in total
maximum power output
(DIN)
304 PS (300 bhp) (224 kW)
at 5500 rpm
Specific output
(DIN)
71 bhp/litre
1.16 bhp/cu in
maximum torque
(DIN)
393 Nm (290 ft·lb) (40.1 kgm)
at 4500 rpm
Specific torque
(DIN)
93 Nm/litre
1.12 ft·lb/cu3
Engine construction
sump wet sumped
compression ratio 9.75:1
Fuel system Lu L-Jet fuel inj.
bmep (brake mean effective pressure) 1168.6 kPa (169.5 psi)
Maximum RPM
crankshaft bearings 5
Engine coolant Water
Unitary capacity 528.25 cc
Aspiration Normal
Compressor N/A
Intercooler None
Catalytic converter N
performance
Acceleration 0-80km/h (50mph)
Acceleration 0-60mph 5 s
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile
Standing kilometre
Maximum speed 266 km/h (165 mph)
Power-to-weight ratio 259.97 PS/tonne (1000 kg)
191.21 kW/tonne (1000 kg)
256.41 bhp/tonne (1000 kg)
0.11 bhp/lb
Weight-to-power ratio 5.23 kg/kW
8.74 lb/bhp
fuel consumption
Fuel consumption
universal consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carfolio Calculated CO2 ?
VED band (UK)
CO2 Effizienz (DE)
chassis
Engine position front
Engine layout longitudinal
Drive wheels rear wheel drive  
Torque split N/A
Steering rack & pinion
turns lock-to-lock 3.700
Turning circle
Front suspension I.DW.CS.ARB.
Rear suspension I.LW.CS.ARB.
Wheel size front 8½J x 15
Wheel size rear 8½ x 15
Tyres front 225/50 VR 15
Tyres rear 225/50 VR 15
Brakes F/R VeDi/Di-S
Front brake diameter
Rear brake diameter
Braked area
Gearbox 5 speed manual
Top gear ratio 0.72
Final drive ratio 3.07
general
Carfolio.com ID23881
Production total
Model code
Model family
RAC rating 43.3
Insurance classification No information available
Tax band No information available
1987 TVR 420 SEAC added before December 1995.
Last modified 2013-02-28.