The Pontiac Bonneville Hardtop is a 4 door saloon (sedan)-bodied car with a front positioned engine powering the rear wheels.
Its engine is a naturally aspirated petrol, 5 litre, overhead valve 90 degree V 8 cylinder with 2 valves per cylinder. In this application it produces 135 bhp (137 PS/101 kW) of power at 4000 rpm, and maximum torque of 339 N·m (250 lb·ft/34.6 kgm) at 1600 rpm.
The engine powers the wheels via a 3 speed automatic transmission.
Claimed kerb weight is 1640 kg.
Full specs
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| bodywork | |||
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| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2944 mm | 115.9 inches | |
| Track/tread (front) | 1567 mm | 61.7 inches | |
| Track/tread (rear) | 1542 mm | 60.7 inches | |
| Length | 5443 mm | 214.3 inches | |
| Width | 1923 mm | 75.7 inches | |
| Height | 1351 mm | 53.2 inches | |
| Ground clearance | 142 mm | 5.6 inches | |
| length:wheelbase ratio | 1.85 | ||
| Kerb weight | 1640 kg | 3616 lb | |
| Weight distribution | |||
| fuel tank capacity | 80 litres | 17.6 [21.1] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | GM | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 5 litre 4955 cc (302.373 cu in) |
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| Bore × Stroke | 101.6 × 76.4 mm
4 × 3.01 in |
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| Bore/stroke ratio | 1.33 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (DIN) |
137 PS (135 bhp) (101 kW) at 4000 rpm |
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| maximum torque (DIN) |
339 Nm (250 ft·lb) (34.6 kgm) at 1600 rpm |
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| Specific output (DIN) |
20.3 kW/litre 27.6 ps/litre 27.2 bhp/litre 0.45 bhp/cu in |
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| Specific torque (DIN) |
68.42 Nm/litre
0.83 ft·lb/cu3 |
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| Engine construction | cast iron block & head | ||
| Lubrication | wet sumped | ||
| compression ratio | 8.2:1 | ||
| Fuel system | 1 Rochester M2MC 200 carburettor | ||
| bmep (brake mean effective pressure) | 859.7 kPa (124.7 psi) | ||
| Maximum RPM | 4400 rpm | ||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 619.38 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 | Higher is better 83.46 PS/tonne (1000 kg) 0.08 PS/kg 61.38 kW/tonne (1000 kg) 0.06 kW/kg 82.32 bhp/tonne (1000 kg) 0.08 bhp/kg 0.04 bhp/lb |
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| Weight-to-power ratio | Lower is better 16.29 kg/kW 27.21 lb/bhp |
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| 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 | 3.500 | ||
| Turning circle | |||
| Front suspension | I.W.CS.ARB. | ||
| Rear suspension | LA.TrailRA.CS.ARB. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | GR78 x 15 | ||
| Tyres rear | GR78 x 15 | ||
| Brakes F/R | VeDi/Dr-S | ||
| Front brake diameter | 279 mm | ||
| Rear brake diameter | |||
| Braked area | 2176 cm2 | ||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 2.41 | ||
| general | |||
| Carfolio.com ID | 163977 | ||
| Production total | |||
| Model code | |||
| RAC rating | 51.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1977 Pontiac Bonneville Hardtop added 2007-11-14. Last modified 2013-02-28. |
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