The GS 400 Convertible is a rear wheel drive convertible/cabriolet automobile with a front located engine, sold by Buick.
The GS 400 Convertible forms part of Buick's Series 44600 model range.
Its engine is a naturally aspirated petrol, 6.6 litre, overhead valve 90 degree V 8 cylinder with 2 valves per cylinder. In this application it produces 340 bhp (345 PS/254 kW) of power at 5000 rpm, and maximum torque of 596 N·m (440 lb·ft/60.8 kgm) at 3200 rpm.
The power is delivered to the wheels through a 3 speed automatic gearbox.
Full specs
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| bodywork | |||
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| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2845 mm | 112 inches | |
| Track/tread (front) | 1499 mm | 59 inches | |
| Track/tread (rear) | 1499 mm | 59 inches | |
| Length | 5098 mm | 200.7 inches | |
| Width | 1920 mm | 75.6 inches | |
| Height | 1364 mm | 53.7 inches | |
| Ground clearance | 140 mm | 5.5 inches | |
| length:wheelbase ratio | 1.79 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 75.8 litres | 16.7 [20] 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 | 102.62 × 99.06 mm
4.04 × 3.9 in |
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| Bore/stroke ratio | 1.04 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (gross) |
345 PS (340 bhp) (254 kW) at 5000 rpm |
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| maximum torque (gross) |
596 Nm (440 ft·lb) (60.8 kgm) at 3200 rpm |
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| Specific output (gross) |
38.7 kW/litre 52.6 ps/litre 51.9 bhp/litre 0.85 bhp/cu in |
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| Specific torque (gross) |
90.92 Nm/litre
1.1 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.25:1 | ||
| Fuel system | 1 Rochester carburettor | ||
| bmep (brake mean effective pressure) | 1142.6 kPa (165.7 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| 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 | 4.060 | ||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 6.00JK x 14 | ||
| Wheel size rear | 6.00JK x 14 | ||
| Tyres front | 7.75-14 | ||
| Tyres rear | 7.75-14 | ||
| 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 | 2.93 | ||
| general | |||
| Carfolio.com ID | 711656 | ||
| Production total | |||
| Model code | 44667 | ||
| Model family | Series 44600 | ||
| RAC rating | 52.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1969 Buick GS 400 Convertible Automatic added 2020-12-20. Last modified 2020-12-20. |
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