The 428 Convertible is a motor car from AC, with rear wheel drive, a front located engine and a Frua-styled 2 door convertible/cabriolet body style.
Its 7 litre engine is a naturally aspirated, overhead valve, 8 cylinder that develops 345 bhp (350 PS/257 kW) of power at 4600 rpm, and maximum torque of 626 N·m (462 lb·ft/63.8 kgm) at 2800 rpm.
The engine transmits power to the wheels via a 3 speed automatic transmission.
Quoted kerb weight is 1483 kg.
Top claimed speed is 233 km/h, or 145 mph.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | Frua | ||
| dimensions & weights | |||
| Wheelbase | 2438 mm | 96 inches | |
| Track/tread (front) | 1397 mm | 55 inches | |
| Track/tread (rear) | 1422 mm | 56 inches | |
| Length | 4509 mm | 177.5 inches | |
| Width | 1702 mm | 67 inches | |
| Height | 1257 mm | 49.5 inches | |
| Ground clearance | 178 mm | 7 inches | |
| length:wheelbase ratio | 1.85 | ||
| Kerb weight | 1483 kg | 3269 lb | |
| Weight distribution | |||
| fuel tank capacity | 85.9 litres | 18.9 [22.7] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Ford | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 7 litre 7010 cc (427.776 cu in) |
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| Bore × Stroke | 105 × 101.2 mm
4.13 × 3.98 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 (SAE) |
350 PS (345 bhp) (257 kW) at 4600 rpm |
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| maximum torque (SAE) |
626 Nm (462 ft·lb) (63.8 kgm) at 2800 rpm |
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| Specific output (SAE) |
36.7 kW/litre 49.9 ps/litre 49.2 bhp/litre 0.81 bhp/cu in |
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| Specific torque (SAE) |
89.3 Nm/litre
1.08 ft·lb/cu3 |
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| Engine construction | cast iron block & head | ||
| Lubrication | wet sumped | ||
| compression ratio | 10.5:1 | ||
| Fuel system | 1 Ford carb | ||
| bmep (brake mean effective pressure) | 1122.2 kPa (162.8 psi) | ||
| Maximum RPM | 5250 rpm | ||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 876.25 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 | 233 km/h (145 mph) | ||
| Power-to-weight ratio | Higher is better 235.87 PS/tonne (1000 kg) 0.24 PS/kg 173.48 kW/tonne (1000 kg) 0.17 kW/kg 232.64 bhp/tonne (1000 kg) 0.23 bhp/kg 0.1 bhp/lb |
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| Weight-to-power ratio | Lower is better 5.76 kg/kW 9.63 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 | rack & pinion | ||
| turns lock-to-lock | 3.500 | ||
| Turning circle | 13.40 m | ||
| Front suspension | I.CS.DW. | ||
| Rear suspension | I.CS.DW. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 205 x 15 | ||
| Tyres rear | 205 x 15 | ||
| Brakes F/R | Di/Di-S | ||
| Front brake diameter | 298 mm | ||
| Rear brake diameter | 267 mm | ||
| Braked area | 3742 cm2 | ||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 2.88 | ||
| general | |||
| Carfolio.com ID | 51645 | ||
| Production total | |||
| Model code | |||
| RAC rating | 54.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1967 AC 428 Convertible added before December 1995. Last modified 2013-02-28. |
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