The Grand Prix 428 is a rear wheel drive coupé passenger car with a front positioned engine, sold by Pontiac.
The power is produced by a naturally aspirated engine of 7 litre capacity. This powerplant features overhead valve valve gear, a 90 degree V 8 cylinder layout, and 2 valves per cylinder. It produces 370 bhp (375 PS/276 kW) of power at 4800 rpm, and maximum torque of 640 N·m (472 lb·ft/65.3 kgm) at 3200 rpm.
The engine delivers its power through to the wheels via a 3 speed automatic transmission.
It weighs a quoted 1564 kg at the kerb.
Full specs
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| Carrosserie | |||
|---|---|---|---|
| Carrosserie | 4/5 seater fixed-head coupé | ||
| Nombre de portes | 2 | ||
| Designer | |||
| Dimensions et poids | |||
| Empattement | 2997 | 118 | |
| Voies AV | 1575 | 62 | |
| Voies AR | 1524 | 60 | |
| Longueur | 5340 | 210.2 | |
| Largeur | 1923 | 75.7 | |
| Hauteur | 1318 | 51.9 | |
| Garde au sol | 140 | 5.5 | |
| 1.78 | |||
| Poids avec pleins | 1564 kg | 3448 | |
| Répartition poids AV | |||
| Réservoir à essence | 100.4 litres | 22.1 [26.5] UK [US] gal. | |
| Caractéristiques aérodynamique | |||
| Coefficient de pénétration | |||
| maître-couple | |||
| SCx | |||
| naturally aspirated petrol | |||
| Constructeur du moteur | GM | ||
| Type moteur | |||
| Cylinders | V 8 in 90° vee | ||
| Cylindrée | 7 litre 6991 cc (426.617 cu in) |
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| Alésage × Course | 104.65 × 101.6 mm
4.12 × 4 in |
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| Rapport alésage / course | 1.03 | ||
| Distribution | overhead valve (OHV)
2 Soupapes par cylindre 16 Total vannes |
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| Puissance maximale (gross) |
375 PS (370 bhp) (276 kW) à 4800 tr/mn |
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| Couple maximale (gross) |
640 Nm (472 ft·lb) (65.3 kgm) à 3200 tr/mn |
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| Specific output (gross) |
39.5 kW/litre 53.7 ps/litre 52.9 bhp/litre 0.87 bhp/cu in |
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(gross) |
91.55 Nm/litre
1.11 ft·lb/cu3 |
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| Construction | cast iron block & head | ||
| Lubrification | Carter humide | ||
| Taux de compression | 10.5:1 | ||
| Carburant | 1 Rochester carburettor | ||
| bmep (brake mean effective pressure) | 1150.4 kPa (166.9 psi) | ||
| Régime maximal | |||
| Nombre de paliers de vilebrequin | 5 | ||
| Refroidissement | Water | ||
| Cylindrée Unitaire | 873.88 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalyseur | N | ||
| Performances | |||
| 0-80km/h | |||
| 0-60mph | |||
| 0-100km/h | |||
| 0-160km/h | |||
| 0-400m | |||
| 0-1000m | |||
| Vitesse | |||
| Power-to-weight ratio | Higher is better 239.86 PS/tonne (1000 kg) 0.24 PS/kg 176.41 kW/tonne (1000 kg) 0.18 kW/kg 236.57 bhp/tonne (1000 kg) 0.24 bhp/kg 0.11 bhp/lb |
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| Weight-to-power ratio | Lower is better 5.67 kg/kW 9.47 lb/bhp |
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| Consommation | |||
| Consommation | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Emissions de CO₂ | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| Châssis | |||
| Emplacement de moteur | front | ||
| Engine layout | longitudinal | ||
| Traction | rear wheel drive | ||
| Répartition du couple | N/A | ||
| Direction | |||
| turns lock-to-lock | |||
| Turning circle | 14.10 m | ||
| Suspension AV | I.CS. | ||
| Suspension AR | LA.CS. | ||
| Roues AV | 7 x 14 | ||
| Roues AR | 7 x 14 | ||
| Pneumatiques AV | G78-14 | ||
| Pneumatiques AR | G78-14 | ||
| Freins AV/AR | Di/Dr-S | ||
| Diamètre des freins AV | 282 mm | ||
| Diamètre des freins AR | 241 mm | ||
| Braked area | |||
| Transmission | 3 speed automatic | ||
| Rapport de démultiplication supérieure | 1 | ||
| Rapport de pont | 3.23 | ||
| Généralités | |||
| Carfolio.com ID | 67078 | ||
| Production total | |||
| Type mines | |||
| RAC rating | 54.3 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1969 Pontiac Grand Prix 428 added before December 1995. Last modified 2013-03-04. |
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