The Speed 25 SC is a rear wheel drive saloon (sedan) road car with a front placed engine, manufactured by Alvis.
The Alvis Speed 25 SC's engine is a naturally aspirated petrol, 3.6 litre, overhead valve 6 cylinder with 2 valves per cylinder. In this application it produces 106 bhp (107 PS/79 kW) of power at 3800 rpm.
The engine transmits power to the wheels via a 4 speed manual gearbox.
It weighs a stated 1854 kg at the kerb.
Its maximum speed claimed is 156 km/h, which is 97 mph.
Full specs
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| bodywork | |||
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| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3150 mm | 124 inches | |
| Track/tread (front) | 1422 mm | 56 inches | |
| Track/tread (rear) | 1422 mm | 56 inches | |
| Length | 4826 mm | 190 inches | |
| Width | 1778 mm | 70 inches | |
| Height | 1600 mm | 63 inches | |
| Ground clearance | 178 mm | 7 inches | |
| length:wheelbase ratio | 1.53 | ||
| Kerb weight | 1854 kg | 4087 lb | |
| Weight distribution | |||
| fuel tank capacity | 77.3 litres | 17 [20.4] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Alvis | ||
| Engine code | |||
| Cylinders | Straight 6 | ||
| Capacity | 3.6 litre 3571 cc (217.916 cu in) |
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| Bore × Stroke | 83 × 110 mm
3.27 × 4.33 in |
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| Bore/stroke ratio | 0.75 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 12 valves in total |
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| maximum power output | 107 PS (106 bhp) (79 kW) at 3800 rpm |
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| maximum torque | |||
| Specific output | 22.1 kW/litre 30.1 ps/litre 29.7 bhp/litre 0.49 bhp/cu in |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 6.35:1 | ||
| Fuel system | 3 SU carbs | ||
| bmep (brake mean effective pressure) | |||
| Maximum RPM | |||
| crankshaft bearings | 7 | ||
| Engine coolant | Water | ||
| Unitary capacity | 595.17 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | 10.4 s | ||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | |||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | 20 s | ||
| Standing kilometre | |||
| Maximum speed | 156 km/h (97 mph) | ||
| Power-to-weight ratio | Higher is better 57.97 PS/tonne (1000 kg) 0.06 PS/kg 42.63 kW/tonne (1000 kg) 0.04 kW/kg 57.17 bhp/tonne (1000 kg) 0.06 bhp/kg 0.03 bhp/lb |
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| Weight-to-power ratio | Lower is better 23.46 kg/kW 39.18 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 | I.TL. | ||
| Rear suspension | LA.SE. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 5.50 x 19 | ||
| Tyres rear | 5.50 x 19 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 4.11 | ||
| general | |||
| Carfolio.com ID | 52514 | ||
| Production total | |||
| Model code | |||
| RAC rating | 25.6 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1938 Alvis Speed 25 SC added before December 1995. Last modified 2013-02-28. |
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