The Buick Roadmaster Convertible Sport Phaeton is a rear wheel drive car, with the engine mounted in the front, and a 4 door convertible/cabriolet bodyshell.
It is part of Buick's Series 80 model series.
Power is produced by an overhead valve, 5.2 litre naturally aspirated 8 cylinder motor, with 2 valves per cylinder that develops power and torque figures of 141 bhp (143 PS/105 kW) at 3600 rpm and 365 N·m (269 lb·ft/37.2 kgm) at 2000 rpm respectively.
Power is transferred to the wheels via a 3 speed manual gearbox.
Full specs
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| bodywork | |||
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| Body type | 6 seater convertible/cabriolet | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3378 mm | 133 inches | |
| Track/tread (front) | 1514 mm | 59.6 inches | |
| Track/tread (rear) | 1588 mm | 62.5 inches | |
| Length | 5417 mm | 213.3 inches | |
| Width | |||
| Height | |||
| Ground clearance | |||
| length:wheelbase ratio | 1.6 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 75.8 litres | 16.7 [20] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Buick | ||
| Engine code | |||
| Cylinders | Straight 8 | ||
| Capacity | 5.2 litre 5247 cc (320.192 cu in) |
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| Bore × Stroke | 87.31 × 109.54 mm
3.44 × 4.31 in |
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| Bore/stroke ratio | 0.8 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output | 143 PS (141 bhp) (105 kW) at 3600 rpm |
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| maximum torque | 365 Nm (269 ft·lb) (37.2 kgm) at 2000 rpm |
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| Specific output | 20 kW/litre 27.2 ps/litre 26.9 bhp/litre 0.44 bhp/cu in |
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| Specific torque |
69.56 Nm/litre
0.84 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 6.35:1 | ||
| Fuel system | 1 Marvel CD2 carburettor | ||
| bmep (brake mean effective pressure) | 874.2 kPa (126.8 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 655.88 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 | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 16 x 7.00 | ||
| Tyres rear | 16 x 7.00 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 3 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 4.18 | ||
| general | |||
| Carfolio.com ID | 340978 | ||
| Production total | |||
| Model code | 80-C | ||
| Model family | Series 80 | ||
| RAC rating | 37.8 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1938 Buick Roadmaster Convertible Sport Phaeton added 2013-06-23. Last modified 2020-02-02. |
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