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.
Full specs

Body type
2 door convertible/cabriolet with 2 seats
Length
4013 mm
Weight
1170 kg
Engine type
naturally aspirated petrol
Engine size
4.2 litre
Cylinders
8, V
Power
304 PS / 300 bhp / 224 kW @ 5500 rpm
Torque
393 Nm / 290 ft.lb / 40.1 kgm @ 4500 rpm
Acceleration
0-60 mph 5 s
Top speed
266 km/h / 165 mph

1987 TVR 420 SEAC specifications

1987 TVR 420 SEAC data
bodywork
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Body type	2 seater convertible/cabriolet
Number of doors	2
Designer
dimensions & weights
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 [15.6] UK [US] gal.
aerodynamics
Drag coefficient
Frontal area
CdA
Powertrain
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
maximum torque (DIN)	393 Nm (290 ft·lb) (40.1 kgm) at 4500 rpm
Specific output (DIN)	52.9 kW/litre 72 ps/litre 71 bhp/litre 1.16 bhp/cu in
Specific torque (DIN)	93 Nm/litre 1.12 ft·lb/cu³
Engine construction
Lubrication	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	Higher is better 259.97 PS/tonne (1000 kg) 0.26 PS/kg 191.21 kW/tonne (1000 kg) 0.19 kW/kg 256.41 bhp/tonne (1000 kg) 0.26 bhp/kg 0.11 bhp/lb
Weight-to-power ratio	Lower is better 5.23 kg/kW 8.74 lb/bhp
fuel consumption
Fuel consumption
universal fuel consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
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 ID	23881
Production total
Model code
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.