The Imperial Custom Southampton is a saloon (sedan) with 2 doors and a front mounted powerplant which transmits its power to the rear wheels.
The Custom Southampton is part of Imperial's SY1-L model series.
It is powered by a naturally aspirated engine of 6.8 litre capacity. This unit features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. It produces 340 bhp (345 PS/254 kW) of power at 4600 rpm.
The engine delivers its power through to the wheels by means of a 3 speed automatic gearbox.
The claimed kerb weight is 2059 kg.
Full specs
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| bodywork | |||
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| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3277 mm | 129 inches | |
| Track/tread (front) | 1567 mm | 61.7 inches | |
| Track/tread (rear) | 1580 mm | 62.2 inches | |
| Length | 5768 mm | 227.1 inches | |
| Width | 2075 mm | 81.7 inches | |
| Height | 1443 mm | 56.8 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.76 | ||
| Kerb weight | 2059 kg | 4539 lb | |
| Weight distribution | |||
| fuel tank capacity | 87.1 litres | 19.2 [23] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Chrysler | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 6.8 litre 6750 cc (411.91 cu in) |
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| Bore × Stroke | 106.2 × 95.25 mm
4.18 × 3.75 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 | 345 PS (340 bhp) (254 kW) at 4600 rpm |
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| maximum torque | |||
| Specific output | 37.6 kW/litre 51.1 ps/litre 50.4 bhp/litre 0.83 bhp/cu in |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 10.1:1 | ||
| Fuel system | 1 Ca AFB-3215S carb | ||
| bmep (brake mean effective pressure) | |||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 843.75 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 | Higher is better 167.42 PS/tonne (1000 kg) 0.17 PS/kg 123.14 kW/tonne (1000 kg) 0.12 kW/kg 165.13 bhp/tonne (1000 kg) 0.17 bhp/kg 0.07 bhp/lb |
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| Weight-to-power ratio | Lower is better 8.12 kg/kW 13.57 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 | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 8.20 x 15 | ||
| Tyres rear | 8.20 x 15 | ||
| Brakes F/R | Dr/Dr-S | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | 2265 cm2 | ||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 2.93 | ||
| general | |||
| Carfolio.com ID | 125202 | ||
| Production total | 826 | ||
| Model code | 912 | ||
| Model family | SY1-L | ||
| RAC rating | 55.9 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1961 Imperial Custom Southampton (1962) added 2004-12-05. Last modified 2013-02-28. |
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