The Firebird Convertible 400 H.O. is a rear wheel drive convertible/cabriolet passenger car with a front located engine, manufactured by Pontiac.
The Firebird Convertible 400 H.O. is part of Pontiac's 223 range of cars.
The power is produced by a naturally aspirated engine of 6.6 litre capacity. This powerplant features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. It has an output of 335 bhp (340 PS/250 kW) of power at 5000 rpm, and maximum torque of 583 N·m (430 lb·ft/59.5 kgm) at 3400 rpm.
The engine transmits power to the wheels via a 3 speed automatic transmission.
It weighs a claimed 1686 kg at the kerb.
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 | 2743 mm | 108 inches | |
| Track/tread (front) | 1524 mm | 60 inches | |
| Track/tread (rear) | 1524 mm | 60 inches | |
| Length | 4796 mm | 188.8 inches | |
| Width | 1849 mm | 72.8 inches | |
| Height | 1267 mm | 49.9 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.75 | ||
| Kerb weight | 1686 kg | 3717 lb | |
| Weight distribution | |||
| fuel tank capacity | 70.1 litres | 15.4 [18.5] 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 | 6.6 litre 6554 cc (399.95 cu in) |
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| Bore × Stroke | 104.65 × 95.25 mm
4.12 × 3.75 in |
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| Bore/stroke ratio | 1.1 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output | 340 PS (335 bhp) (250 kW) at 5000 rpm |
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| maximum torque | 583 Nm (430 ft·lb) (59.5 kgm) at 3400 rpm |
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| Specific output | 38.1 kW/litre 51.8 ps/litre 51.1 bhp/litre 0.84 bhp/cu in |
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| Specific torque |
88.95 Nm/litre
1.08 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.75:1 | ||
| Fuel system | 1 Rochester carburettor | ||
| bmep (brake mean effective pressure) | 1117.8 kPa (162.1 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 819.25 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 | |||
| Power-to-weight ratio | Higher is better 201.46 PS/tonne (1000 kg) 0.2 PS/kg 148.17 kW/tonne (1000 kg) 0.15 kW/kg 198.7 bhp/tonne (1000 kg) 0.2 bhp/kg 0.09 bhp/lb |
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| Weight-to-power ratio | Lower is better 6.75 kg/kW 11.27 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 | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 6 x 14 | ||
| Wheel size rear | 6 x 14 | ||
| Tyres front | Firestone F70-14 | ||
| Tyres rear | Firestone F70-14 | ||
| 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 | 3.08 | ||
| general | |||
| Carfolio.com ID | 343618 | ||
| Production total | |||
| Model code | 22367 | ||
| Model family | 223 | ||
| RAC rating | 54.3 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1968 Pontiac Firebird Convertible 400 H.O. Automatic added 2013-07-15. Last modified 2020-06-10. |
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