The Chieftain Convertible Super Hydra-Matic is a rear wheel drive convertible/cabriolet motor car with a front located engine, sold by Pontiac.
It forms part of Pontiac's 25 model range.
It is powered by a naturally aspirated engine of 6 litre capacity. This unit features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. It develops 270 bhp (274 PS/201 kW) of power at 4600 rpm, and maximum torque of 526 N·m (388 lb·ft/53.6 kgm) at 2800 rpm.
The engine transfers its power through to the wheels via a 4 speed automatic gearbox.
Full specs
|
|
|||
| bodywork | |||
|---|---|---|---|
| Body type | 4/5 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 3099 mm | 122 inches | |
| Track/tread (front) | 1494 mm | 58.8 inches | |
| Track/tread (rear) | 1509 mm | 59.4 inches | |
| Length | 5377 mm | 211.7 inches | |
| Width | 1966 mm | 77.4 inches | |
| Height | 1415 mm | 55.7 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.74 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 76 litres | 16.7 [20.1] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Pontiac | ||
| Engine code | Tempest 395 | ||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 6 litre 6041 cc (368.644 cu in) |
||
| Bore × Stroke | 103.12 × 90.42 mm
4.06 × 3.56 in |
||
| Bore/stroke ratio | 1.14 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
||
| maximum power output (gross) |
274 PS (270 bhp) (201 kW) at 4600 rpm |
||
| maximum torque (gross) |
526 Nm (388 ft·lb) (53.6 kgm) at 2800 rpm |
||
| Specific output (gross) |
33.3 kW/litre 45.3 ps/litre 44.7 bhp/litre 0.73 bhp/cu in |
||
| Specific torque (gross) |
87.07 Nm/litre
1.05 ft·lb/cu3 |
||
| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10:1 | ||
| Fuel system | 1 Rochester carburettor | ||
| bmep (brake mean effective pressure) | 1094.2 kPa (158.7 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 755.13 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 | |||
| 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 | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | |||
| Wheel size rear | |||
| Tyres front | 8.00-14 | ||
| Tyres rear | 8.00-14 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | |||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 4 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.23 | ||
| general | |||
| Carfolio.com ID | 663586 | ||
| Production total | |||
| Model code | 2767 | ||
| Model family | 25 | ||
| RAC rating | 52.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
|
1958 Pontiac Chieftain Convertible Super Hydra-Matic added 2020-04-04. Last modified 2020-04-10. |
|||