The Plymouth GTX 440 +6 is a 2 door coupé style motor vehicle with a front positioned engine powering the rear wheels.
The 8 cylinder, overhead valve naturally aspirated engine has 2 valves per cylinder and a displacement of 7.2 litres. It musters power and torque figures of 385 bhp (390 PS/287 kW) at 4700 rpm and 665 Nm (490 lbft/67.8 kgm) at 3200 rpm respectively.
The engine transfers its power through to the wheels via a 4 speed manual gearbox.
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 | 2921 mm | 115 inches | |
| Track/tread (front) | 1527 mm | 60.1 inches | |
| Track/tread (rear) | 1575 mm | 62 inches | |
| Length | 5161 mm | 203.2 inches | |
| Width | 2009 mm | 79.1 inches | |
| Height | 1346 mm | 53 inches | |
| Ground clearance | 145 mm | 5.7 inches | |
| length:wheelbase ratio | 1.77 | ||
| Kerb weight | |||
| Weight distribution | |||
| fuel tank capacity | 79.6 litres | 17.5 [21] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Chrysler | ||
| Engine code | |||
| Cylinders | V 8 in 90° vee | ||
| Capacity | 7.2 litre 7206 cc (439.737 cu in) |
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| Bore × Stroke | 109.73 × 95.25 mm
4.32 × 3.75 in |
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| Bore/stroke ratio | 1.15 | ||
| Valve gear | overhead valve (OHV)
2 valves per cylinder 16 valves in total |
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| maximum power output (SAE gross) |
390 PS (385 bhp) (287 kW) at 4700 rpm |
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| maximum torque (SAE gross) |
665 Nm (490 ft·lb) (67.8 kgm) at 3200 rpm |
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| Specific output (SAE gross) |
39.8 kW/litre 54.2 ps/litre 53.4 bhp/litre 0.88 bhp/cu in |
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| Specific torque (SAE gross) |
92.28 Nm/litre
1.12 ft·lb/cu3 |
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| Engine construction | |||
| Lubrication | wet sumped | ||
| compression ratio | 10.3:1 | ||
| Fuel system | 3 Holley carburettors | ||
| bmep (brake mean effective pressure) | 1159.7 kPa (168.2 psi) | ||
| Maximum RPM | |||
| crankshaft bearings | 5 | ||
| Engine coolant | Water | ||
| Unitary capacity | 900.75 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 | 6.0J x 14 | ||
| Wheel size rear | 6.0J x 14 | ||
| Tyres front | G70 x 14 2B/2 | ||
| Tyres rear | G70 x 14 2B/2 | ||
| Brakes F/R | Dr/Dr | ||
| Front brake diameter | 279 mm | ||
| Rear brake diameter | 279 mm | ||
| Braked area | |||
| Gearbox | 4 speed manual | ||
| Top gear ratio | 1 | ||
| Final drive ratio | 3.54 | ||
| general | |||
| Carfolio.com ID | 828674 | ||
| Production total | |||
| Model code | RS23 | ||
| RAC rating | 59.7 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1971 Plymouth GTX 440 +6 added 2025-03-09. Last modified 2025-03-09. |
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