The Tempest Custom Convertible H.O. is a car from Pontiac, with rear wheel drive, a front mounted engine and a 2 door convertible/cabriolet body style.
The Pontiac Tempest Custom Convertible H.O. is one of the 235 model family from Pontiac.
Its 8 cylinder, overhead valve naturally aspirated engine has 2 valves per cylinder and a volume of 5.8 litres. For this model it provides power and torque figures of 320 bhp (324 PS/239 kW) at 5100 rpm and 515 Nm (380 lbft/52.5 kgm) at 3200 rpm respectively.
The engine delivers its power through to the wheels by means of a 3 speed automatic gearbox.
Full specs
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| bodywork | |||
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| Body type | 2+2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2845 mm | 112 inches | |
| Track/tread (front) | 1524 mm | 60 inches | |
| Track/tread (rear) | 1524 mm | 60 inches | |
| Length | 5098 mm | 200.7 inches | |
| Width | 1900 mm | 74.8 inches | |
| Height | 1323 mm | 52.1 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.79 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 81.5 litres | 17.9 [21.5] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Pontiac | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 5.8 litre 5812 cc (354.67 cu in) |
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| Bore × Stroke | 98.55 × 95.25 mm
3.88 × 3.75 in |
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| Bore/stroke ratio | 1.03 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (gross) |
324 PS (320 bhp) (239 kW) at 5100 rpm |
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| maximum torque (gross) |
515 Nm (380 ft·lb) (52.5 kgm) at 3200 rpm |
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| Specific output (gross) |
41.1 kW/litre 55.8 ps/litre 55.1 bhp/litre 0.9 bhp/cu in |
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| Specific torque (gross) |
88.61 Nm/litre
1.07 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.5:1 | ||
| Fuel system | 1 carburettor | ||
| bmep (brake mean effective pressure) | 1113.5 kPa (161.5 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 726.5 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 | 5J x 14 | ||
| Wheel size rear | 5J x 14 | ||
| Tyres front | 8.25 x 14 | ||
| Tyres rear | 8.25 x 14 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | 241 mm | ||
| Rear brake diameter | 241 mm | ||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.23 | ||
| general | |||
| Carfolio.com ID | 346247 | ||
| Production total | |||
| Model code | 23567 | ||
| Model family | 235 | ||
| RAC rating | 48.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1968 Pontiac Tempest Custom Convertible H.O. Automatic added 2013-07-15. Last modified 2020-06-10. |
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