The Grand Prix J is a rear wheel drive coupé passenger car with a front positioned engine, from Pontiac.
Power is produced by an overhead valve, 6.6 litre naturally aspirated 8 cylinder motor, with 2 valves per cylinder that produces power and torque figures of 300 bhp (304 PS/224 kW) at 4800 rpm and 543 N·m (400 lb·ft/55.4 kgm) at 3600 rpm respectively.
The engine drives the wheels compliments of 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 | 2997 mm | 118 inches | |
| Track/tread (front) | 1575 mm | 62 inches | |
| Track/tread (rear) | 1524 mm | 60 inches | |
| Length | 5408 mm | 212.9 inches | |
| Width | 1941 mm | 76.4 inches | |
| Height | 1321 mm | 52 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.8 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 89 litres | 19.6 [23.5] 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 | 6.6 litre 6555 cc (400.011 cu in) |
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| Bore × Stroke | 104.65 × 95.25 mm
4.12 × 3.75 in |
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| Bore/stroke ratio | 1.1 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (gross) |
304 PS (300 bhp) (224 kW) at 4800 rpm |
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| maximum torque (gross) |
543 Nm (400 ft·lb) (55.4 kgm) at 3600 rpm |
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| Specific output (gross) |
34.1 kW/litre 46.4 ps/litre 45.8 bhp/litre 0.75 bhp/cu in |
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| Specific torque (gross) |
82.84 Nm/litre
1 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 8.2:1 | ||
| Fuel system | 1 carburettor | ||
| bmep (brake mean effective pressure) | 1041 kPa (151 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 819.38 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 | 2.900 | ||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 7 x 14 | ||
| Wheel size rear | 7 x 14 | ||
| Tyres front | G78-14 | ||
| Tyres rear | G78-14 | ||
| Brakes F/R | VeDi/Dr-S | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.08 | ||
| general | |||
| Carfolio.com ID | 329142 | ||
| Production total | |||
| Model code | |||
| RAC rating | 54.3 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1971 Pontiac Grand Prix J Automatic added 2013-04-08. Last modified 2020-02-02. |
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