The Plymouth Road Runner 426 Hemi is a coupé with 2 doors and a front mounted engine which delivers its power through the rear wheels.
It is powered 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 has an output of 425 bhp (431 PS/317 kW) of power at 5000 rpm, and maximum torque of 665 N·m (490 lb·ft/67.8 kgm) at 4000 rpm.
This power is transferred to the wheels via a 4 speed manual transmission.
Full specs
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| Carrosserie | |||
|---|---|---|---|
| Carrosserie | 4/5 seater fixed-head coupé | ||
| Nombre de portes | 2 | ||
| Designer | |||
| Dimensions et poids | |||
| Empattement | 2921 | 115 | |
| Voies AV | 1527 | 60.1 | |
| Voies AR | 1575 | 62 | |
| Longueur | 5161 | 203.2 | |
| Largeur | 2009 | 79.1 | |
| Hauteur | 1339 | 52.7 | |
| Garde au sol | 137 | 5.4 | |
| 1.77 | |||
| Poids avec pleins | |||
| Répartition poids AV | |||
| Réservoir à essence | |||
| Caractéristiques aérodynamique | |||
| Coefficient de pénétration | |||
| maître-couple | |||
| SCx | |||
| naturally aspirated petrol | |||
| Constructeur du moteur | Chrysler | ||
| Type moteur | |||
| Cylinders | V 8 in 90° vee | ||
| Cylindrée | 7 litre 6974 cc (425.58 cu in) |
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| Alésage × Course | 107.95 × 95.25 mm
4.25 × 3.75 in |
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| Rapport alésage / course | 1.13 | ||
| Distribution | overhead valve (OHV)
2 Soupapes par cylindre 16 Total vannes |
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| Puissance maximale (SAE gross) |
431 PS (425 bhp) (317 kW) à 5000 tr/mn |
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| Couple maximale (SAE gross) |
665 Nm (490 ft·lb) (67.8 kgm) à 4000 tr/mn |
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| Specific output (SAE gross) |
45.4 kW/litre 61.8 ps/litre 60.9 bhp/litre 1 bhp/cu in |
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(SAE gross) |
95.35 Nm/litre
1.15 ft·lb/cu3 |
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| Construction | |||
| Lubrification | Carter humide | ||
| Taux de compression | 10.2:1 | ||
| Carburant | |||
| bmep (brake mean effective pressure) | 1198.3 kPa (173.8 psi) | ||
| Régime maximal | |||
| Nombre de paliers de vilebrequin | 5 | ||
| Refroidissement | Water | ||
| Cylindrée Unitaire | 871.75 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 | |||
| Weight-to-power ratio | |||
| 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 | |||
| Suspension AV | |||
| Suspension AR | |||
| Roues AV | 6.0JJ x 14 | ||
| Roues AR | 6.0JJ x 14 | ||
| Pneumatiques AV | F70 x 14 2B/2 | ||
| Pneumatiques AR | F70 x 14 2B/2 | ||
| Freins AV/AR | Dr/Dr | ||
| Diamètre des freins AV | 279 mm | ||
| Diamètre des freins AR | 279 mm | ||
| Braked area | |||
| Transmission | 4 speed manual | ||
| Rapport de démultiplication supérieure | 1 | ||
| Rapport de pont | 3.54 | ||
| Généralités | |||
| Carfolio.com ID | 827585 | ||
| Production total | |||
| Type mines | RM23 | ||
| RAC rating | 57.8 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1971 Plymouth Road Runner 426 Hemi added 2025-03-01. Last modified 2025-03-09. |
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