The Buick Gran Sport 'GS' 455 Stage I is a 2 door convertible/cabriolet style motor vehicle with a front positioned engine powering the rear wheels.
The Buick Gran Sport 'GS' 455 Stage I belongs to the Series 44600 range of cars from Buick.
Its engine is a naturally aspirated petrol, 7.5 litre, overhead valve 90 degree V 8 cylinder with 2 valves per cylinder. This powerplant develops 360 bhp (365 PS/268 kW) of power at 4600 rpm, and maximum torque of 691 N·m (510 lb·ft/70.5 kgm) at 2800 rpm.
This power is transferred to the wheels via a 3 speed automatic transmission.
Stated kerb weight is 1702 kg.
Maximum speed claimed is 233 km/h or 145 mph.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2845 mm | 112 inches | |
| Track/tread (front) | 1511 mm | 59.5 inches | |
| Track/tread (rear) | 1499 mm | 59 inches | |
| Length | 5100 mm | 200.8 inches | |
| Width | 1918 mm | 75.5 inches | |
| Height | 1359 mm | 53.5 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.79 | ||
| Kerb weight | 1702 kg | 3752 lb | |
| Weight distribution | |||
| fuel tank capacity | |||
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | GM | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 7.5 litre 7458 cc (455.115 cu in) |
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| Bore × Stroke | 109.5 × 99 mm
4.31 × 3.9 in |
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| Bore/stroke ratio | 1.11 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (gross) |
365 PS (360 bhp) (268 kW) at 4600 rpm |
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| maximum torque (gross) |
691 Nm (510 ft·lb) (70.5 kgm) at 2800 rpm |
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| Specific output (gross) |
36 kW/litre 48.9 ps/litre 48.3 bhp/litre 0.79 bhp/cu in |
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| Specific torque (gross) |
92.65 Nm/litre
1.12 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.5:1 | ||
| Fuel system | 1 Rochester carburettor | ||
| bmep (brake mean effective pressure) | 1164.3 kPa (168.9 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 932.25 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | 5.5 s | ||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | 13.79 s
@ 104.5 mph |
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| Standing kilometre | |||
| Maximum speed | 233 km/h (145 mph) | ||
| Power-to-weight ratio | Higher is better 214.46 PS/tonne (1000 kg) 0.21 PS/kg 157.73 kW/tonne (1000 kg) 0.16 kW/kg 211.52 bhp/tonne (1000 kg) 0.21 bhp/kg 0.09 bhp/lb |
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| Weight-to-power ratio | Lower is better 6.34 kg/kW 10.59 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 | 5.560 | ||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 6.00JK x 14 | ||
| Wheel size rear | 6.00JK x 14 | ||
| Tyres front | G78-14 | ||
| Tyres rear | G78-14 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | 241 mm | ||
| Rear brake diameter | 241 mm | ||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.91 | ||
| general | |||
| Carfolio.com ID | 44913 | ||
| Production total | |||
| Model code | 44637 | ||
| Model family | Series 44600 | ||
| RAC rating | 59.5 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1969 Buick Gran Sport 'GS' 455 Stage I (1970) added before December 1995. Last modified 2020-12-20. |
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