The Chevrolet Diplomata is a saloon (sedan) with 4 doors and a front mounted engine which delivers the power to the rear wheels.
Its 6 cylinder, overhead valve naturally aspirated engine has 2 valves per cylinder and a displacement of 4.1 litres. It produces power and torque figures of 114 bhp (116 PS/85 kW) at 4200 rpm and 260 Nm (192 lbft/26.5 kgm) at 2200 rpm respectively.
A 4 speed manual transmission supplies the power to the driven wheels.
Quoted kerb weight is 1243 kg.
Maximum stated speed is 170 km/h, or 106 mph.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater sedan/saloon | ||
| Number of doors | 4 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2670 mm | 105.1 inches | |
| Track/tread (front) | 1430 mm | 56.3 inches | |
| Track/tread (rear) | 1410 mm | 55.5 inches | |
| Length | 4740 mm | 186.6 inches | |
| Width | 1770 mm | 69.7 inches | |
| Height | 1390 mm | 54.7 inches | |
| Ground clearance | 180 mm | 7.1 inches | |
| length:wheelbase ratio | 1.78 | ||
| Kerb weight | 1243 kg | 2740 lb | |
| Weight distribution | |||
| fuel tank capacity | 65 litres | 14.3 [17.2] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | GM | ||
| Engine code | GMB 250 | ||
| Cylinders | Straight 6 | ||
| Capacity | 4.1 litre 4093 cc (249.77 cu in) |
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| Bore × Stroke | 98.4 × 89.7 mm
3.87 × 3.53 in |
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| Bore/stroke ratio | 1.1 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 12 valves in total |
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| maximum power output (SAE) |
116 PS (114 bhp) (85 kW) at 4200 rpm |
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| maximum torque (SAE) |
260 Nm (192 ft·lb) (26.5 kgm) at 2200 rpm |
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| Specific output (SAE) |
20.8 kW/litre 28.2 ps/litre 27.9 bhp/litre 0.46 bhp/cu in |
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| Specific torque (SAE) |
63.52 Nm/litre
0.77 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | |||
| compression ratio | 7.5:1 | ||
| Fuel system | 1 Wecarbras carb | ||
| bmep (brake mean effective pressure) | 798.3 kPa (115.8 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 7 | ||
| Engine coolant | Water | ||
| Unitary capacity | 682.17 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 | 170 km/h (106 mph) | ||
| Power-to-weight ratio | Higher is better 92.99 PS/tonne (1000 kg) 0.09 PS/kg 68.39 kW/tonne (1000 kg) 0.07 kW/kg 91.71 bhp/tonne (1000 kg) 0.09 bhp/kg 0.04 bhp/lb |
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| Weight-to-power ratio | Lower is better 14.62 kg/kW 24.42 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 | 3.750 | ||
| Turning circle | 11.30 m | ||
| Front suspension | I.W.CS.ARB. | ||
| Rear suspension | LA.TB.LiBar.CS.ARB. | ||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 195/70 SR 14 | ||
| Tyres rear | 195/70 SR 14 | ||
| Brakes F/R | VeDi/Dr-S | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.08 | ||
| general | |||
| Carfolio.com ID | 101244 | ||
| Production total | |||
| Model code | |||
| RAC rating | 36.0 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1979 Chevrolet Diplomata added 2002-10-28. Last modified 2013-02-28. |
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