The Firebird Formula 455 is a rear wheel drive coupé car with a front located engine, from Pontiac.
It forms part of Pontiac's 2F range of cars.
Powering the Pontiac Firebird Formula 455 is an overhead valve, 7.5 litre naturally aspirated 8 cylinder powerplant, with 2 valves per cylinder that develops power and torque figures of 250 bhp (253 PS/186 kW) at 4000 rpm and 515 N·m (380 lb·ft/52.5 kgm) at 2800 rpm respectively.
The engine delivers its power through to the wheels via a 3 speed automatic transmission.
Full specs
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| bodywork | |||
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| Body type | 2+2 seater fixed-head coupé | ||
| Number of doors | 2 | ||
| Designer | |||
| dimensions & weights | |||
| Wheelbase | 2743 mm | 108 inches | |
| Track/tread (front) | 1565 mm | 61.6 inches | |
| Track/tread (rear) | 1532 mm | 60.3 inches | |
| Length | 4978 mm | 196 inches | |
| Width | 1854 mm | 73 inches | |
| Height | 1250 mm | 49.2 inches | |
| Ground clearance | |||
| length:wheelbase ratio | 1.81 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 76.5 litres | 16.8 [20.2] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | GM | ||
| Engine code | Y | ||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 7.5 litre 7474 cc (456.091 cu in) |
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| Bore × Stroke | 105.47 × 106.93 mm
4.15 × 4.21 in |
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| Bore/stroke ratio | 0.99 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (net) |
253 PS (250 bhp) (186 kW) at 4000 rpm |
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| maximum torque (net) |
515 Nm (380 ft·lb) (52.5 kgm) at 2800 rpm |
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| Specific output (net) |
24.9 kW/litre 33.9 ps/litre 33.4 bhp/litre 0.55 bhp/cu in |
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| Specific torque (net) |
68.91 Nm/litre
0.83 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 8:1 | ||
| Fuel system | 1 Rochester carburettor | ||
| bmep (brake mean effective pressure) | 865.9 kPa (125.6 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 934.25 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | |||
| 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 | 6 x 14 | ||
| Wheel size rear | 6 x 14 | ||
| Tyres front | F70-14 | ||
| Tyres rear | F70-14 | ||
| Brakes F/R | VeDi/Dr | ||
| Front brake diameter | 279 mm | ||
| Rear brake diameter | |||
| Braked area | |||
| Gearbox | 3 speed automatic | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.08 | ||
| general | |||
| Carfolio.com ID | 692538 | ||
| Production total | |||
| Model code | U87 | ||
| Model family | 2F | ||
| RAC rating | 55.2 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1974 Pontiac Firebird Formula 455 added 2020-07-17. Last modified 2020-07-17. |
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