The Porsche 928 is a rear wheel drive road car, with the engine placed in the front, and a 2 door coupé body.
Its 8 cylinder, single overhead camshaft naturally aspirated powerplant has 2 valves per cylinder and a displacement of 4.5 litres. For this model it develops power and torque figures of 237 bhp (240 PS/177 kW) at 5250 rpm and 380 Nm (280 lbft/38.8 kgm) at 3600 rpm respectively.
The engine delivers its power through to the wheels via a 5 speed manual 'box.
Maximum speed claimed is 230 km/h, which is 143 mph.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2+2 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2500 mm | 98.4 inches | |
| Track/tread (front) | 1551 mm | 61.1 inches | |
| Track/tread (rear) | 1530 mm | 60.2 inches | |
| Length | 4447 mm | 175.1 inches | |
| Width | 1836 mm | 72.3 inches | |
| Height | 1313 mm | 51.7 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.78 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 86 litres | 18.9 [22.7] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | 0.41 | ||
| Frontal area | 1.95 m² | ||
| CdA | 0.80 | ||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Porsche | ||
| Engine code | M 28/09 | ||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 4.5 litre 4474 cc (273.02 cu in) |
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| Bore × Stroke | 95 × 78.9 mm
3.74 × 3.11 in |
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| Bore/stroke ratio | 1.2 | ||
| Valve gear | single overhead camshaft (SOHC)
2 valves per cylinder 16 valves in total |
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| maximum power output (DIN) |
240 PS (237 bhp) (177 kW) at 5250 rpm |
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| maximum torque (DIN) |
380 Nm (280 ft·lb) (38.8 kgm) at 3600 rpm |
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| Specific output (DIN) |
39.5 kW/litre 53.7 ps/litre 53 bhp/litre 0.87 bhp/cu in |
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| Specific torque (DIN) |
84.94 Nm/litre
1.03 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10:1 | ||
| Fuel system | Bosch K-Jetronic fuel injection | ||
| bmep (brake mean effective pressure) | 1067.3 kPa (154.8 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 559.25 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | N | ||
| performance | |||
| Acceleration 0-80km/h (50mph) | |||
| Acceleration 0-60mph | |||
| Acceleration 0-100km/h | 7.2 s | ||
| Acceleration 0-160km/h (100mph) | |||
| Standing quarter-mile | |||
| Standing kilometre | |||
| Maximum speed | 230 km/h (143 mph) | ||
| 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 | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 7J x 15 | ||
| Wheel size rear | 7J x 15 | ||
| Tyres front | 215/60 VR 15 | ||
| Tyres rear | 215/60 VR 15 | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 282 mm | ||
| Rear brake diameter | 289 mm | ||
| Braked area | |||
| Gearbox | 5 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 2.75 | ||
| general | |||
| Carfolio.com ID | 831259 | ||
| Production total | |||
| Model code | |||
| RAC rating | 44.8 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1977 Porsche 928 (1980) added 2025-03-30. Last modified 2025-03-30. |
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