The Le Mans 'Colonnade' Sport Coupé GTO 455 is a car from Pontiac, with rear wheel drive, a front located engine and a 2 door coupé body style.
Its 8 cylinder, overhead valve naturally aspirated engine has 2 valves per cylinder and a volume of 7.5 litres. For this model it develops power and torque figures of 250 bhp (253 PS/186 kW) at 4000 rpm and 501 Nm (370 lbft/51.1 kgm) at 2800 rpm respectively.
A 3 speed automatic 'box delivers the power to the wheels.
Quoted weight at the kerb is 1724 kg.
Maximum stated speed is 193 km/h, or 120 mph.
Full specs
|
|
|||
| bodywork | |||
|---|---|---|---|
| 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 | 5268 mm | 207.4 inches | |
| Width | 1974 mm | 77.7 inches | |
| Height | 1344 mm | 52.9 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.85 | ||
| Kerb weight | 1724 kg | 3801 lb | |
| Weight distribution | |||
| fuel tank capacity | 81.5 litres | 17.9 [21.5] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Pontiac | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 7.5 litre 7462 cc (455.359 cu in) |
||
| Bore × Stroke | 105.4 × 106.9 mm
4.15 × 4.21 in |
||
| Bore/stroke ratio | 0.99 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
||
| maximum power output (SAE net) |
253 PS (250 bhp) (186 kW) at 4000 rpm |
||
| maximum torque (SAE net) |
501 Nm (370 ft·lb) (51.1 kgm) at 2800 rpm |
||
| Specific output (SAE net) |
25 kW/litre 34 ps/litre 33.5 bhp/litre 0.55 bhp/cu in |
||
| Specific torque (SAE net) |
67.14 Nm/litre
0.81 ft·lb/cu3 |
||
| Engine construction | cast iron block & head | ||
| Lubrication | wet sumped | ||
| compression ratio | 8:1 | ||
| Fuel system | 1 Rochester Quadrajet carburettor | ||
| bmep (brake mean effective pressure) | 843.7 kPa (122.4 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 932.75 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | |||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | 6.6 s | ||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | 13.7 s
@ 99 mph |
||
| Standing kilometre | |||
| Maximum speed | 193 km/h (120 mph) | ||
| Power-to-weight ratio | Higher is better 147.03 PS/tonne (1000 kg) 0.15 PS/kg 108.14 kW/tonne (1000 kg) 0.11 kW/kg 145.01 bhp/tonne (1000 kg) 0.15 bhp/kg 0.06 bhp/lb |
||
| Weight-to-power ratio | Lower is better 9.25 kg/kW 15.45 lb/bhp |
||
| 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 | G60 x 15 | ||
| Tyres rear | G60 x 15 | ||
| Brakes F/R | Di/Dr-S | ||
| Front brake diameter | 282 mm | ||
| Rear brake diameter | 241 mm | ||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.42 | ||
| general | |||
| Carfolio.com ID | 221001 | ||
| Production total | |||
| Model code | |||
| RAC rating | 55.1 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
|
1973 Pontiac Le Mans 'Colonnade' Sport Coupé GTO 455 Automatic added 2010-11-07. Last modified 2020-02-02. |
|||
