The Century Custom Hardtop Coupé is an automobile from Buick, with rear wheel drive, a front positioned engine and a 2 door coupé body style.
The Century Custom Hardtop Coupé is part of Buick's 4A family of cars.
Power is produced by an overhead valve, 3.8 litre naturally aspirated 6 cylinder powerplant, with 2 valves per cylinder that develops power and torque figures of 110 bhp (112 PS/82 kW) at 4000 rpm and 237 N·m (175 lb·ft/24.2 kgm) at 2000 rpm respectively.
The engine delivers its power through to the wheels via a 3 speed automatic gearbox.
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 | 2845 mm | 112 inches | |
| Track/tread (front) | 1562 mm | 61.5 inches | |
| Track/tread (rear) | 1542 mm | 60.7 inches | |
| Length | 5321 mm | 209.5 inches | |
| Width | 2007 mm | 79 inches | |
| Height | 1354 mm | 53.3 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.87 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 83 litres | 18.3 [21.9] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | GM | ||
| Engine code | |||
| Cylinders | V 6 in 90° vee | ||
| Capacity | 3.8 litre 3791 cc (231.341 cu in) |
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| Bore × Stroke | 96.52 × 86.36 mm
3.8 × 3.4 in |
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| Bore/stroke ratio | 1.12 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 12 valves in total |
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| maximum power output (net) |
112 PS (110 bhp) (82 kW) at 4000 rpm |
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| maximum torque (net) |
237 Nm (175 ft·lb) (24.2 kgm) at 2000 rpm |
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| Specific output (net) |
21.6 kW/litre 29.4 ps/litre 29 bhp/litre 0.48 bhp/cu in |
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| Specific torque (net) |
62.52 Nm/litre
0.76 ft·lb/cu3 |
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| Engine construction | cast iron block & head | ||
| Lubrication | wet sumped | ||
| compression ratio | 8:1 | ||
| Fuel system | 1 Rochestrer carburettor | ||
| bmep (brake mean effective pressure) | 785.6 kPa (113.9 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 4 | ||
| Engine coolant | Water | ||
| Unitary capacity | 631.83 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| 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 | 6 x 15 | ||
| Wheel size rear | 6 x 15 | ||
| Tyres front | GR78-15 | ||
| Tyres rear | GR78-15 | ||
| Brakes F/R | VeDi/Dr | ||
| Front brake diameter | 279 mm | ||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 2.73 | ||
| general | |||
| Carfolio.com ID | 339933 | ||
| Production total | |||
| Model code | H57 | ||
| Model family | 4A | ||
| RAC rating | 34.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1975 Buick Century Custom Hardtop Coupé Automatic added 2013-06-22. Last modified 2020-02-02. |
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