The Road Runner Coupé is a rear wheel drive coupé automobile with a front located engine, manufactured by Plymouth.
The Plymouth Road Runner Coupé is one of the FR2 range of cars from Plymouth.
Power is produced by an overhead valve, 6.3 litre naturally aspirated 8 cylinder powerplant, with 2 valves per cylinder that provides power and torque figures of 335 bhp (340 PS/250 kW) at 5200 rpm and 576 N·m (425 lb·ft/58.7 kgm) at 3400 rpm respectively.
A 3 speed automatic gearbox supplies the power to the wheels.
Full specs
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| bodywork | |||
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| Body type | 4/5 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2946 mm | 116 inches | |
| Track/tread (front) | 1516 mm | 59.7 inches | |
| Track/tread (rear) | 1491 mm | 58.7 inches | |
| Length | 5182 mm | 204 inches | |
| Width | 1941 mm | 76.4 inches | |
| Height | 1346 mm | 53 inches | |
| Ground clearance | 137 mm | 5.4 inches | |
| length:wheelbase ratio | 1.76 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 72 litres | 15.8 [19] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Chrysler | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 6.3 litre 6286 cc (383.595 cu in) |
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| Bore × Stroke | 107.95 × 85.85 mm
4.25 × 3.38 in |
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| Bore/stroke ratio | 1.26 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (gross) |
340 PS (335 bhp) (250 kW) at 5200 rpm |
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| maximum torque (gross) |
576 Nm (425 ft·lb) (58.7 kgm) at 3400 rpm |
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| Specific output (gross) |
39.7 kW/litre 54 ps/litre 53.3 bhp/litre 0.87 bhp/cu in |
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| Specific torque (gross) |
91.63 Nm/litre
1.11 ft·lb/cu3 |
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| Engine construction | cast iron block & head | ||
| Lubrication | wet sumped | ||
| compression ratio | 9.5:1 | ||
| Fuel system | |||
| bmep (brake mean effective pressure) | 1151.5 kPa (167 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 785.75 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | |||
| Power-to-weight ratio | |||
| Weight-to-power ratio | |||
| fuel consumption | |||
| Fuel consumption | |||
| universal fuel 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 | |||
| turns lock-to-lock | 5.300 | ||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 5.0J x 14 | ||
| Wheel size rear | 5.0J x 14 | ||
| Tyres front | F78 x 14 | ||
| Tyres rear | F78 x 14 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | 279 mm | ||
| Rear brake diameter | 254 mm | ||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.23 | ||
| general | |||
| Carfolio.com ID | 522401 | ||
| Production total | |||
| Model code | RM21 | ||
| Model family | FR2 | ||
| RAC rating | 57.8 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1970 Plymouth Road Runner Coupé Automatic added 2017-06-21. Last modified 2020-03-16. |
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