The GMA T.33 Spider is a 2 door convertible/cabriolet style car styled by Gordon Murray with a mid mounted engine powering the rear wheels.
Its 12 cylinder, double overhead camshaft naturally aspirated powerplant has 4 valves per cylinder and a displacement of 4 litres. For this model it produces power and torque figures of 609 bhp (617 PS/454 kW) at 10250 rpm and 451 Nm (333 lbft/46 kgm) at 6750 rpm respectively. Lubrication is of the dry sump-type.
The power is transferred to the wheels through a 6 speed manual gearbox.
It weighs a claimed 1108 kg at the kerb.
Maximum claimed speed is 335 km/h, or 208 mph.
Full specs
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| bodywork | |||
|---|---|---|---|
| Body type | 2 seater convertible/cabriolet | ||
| Number of doors | 2 | ||
| Designer | Gordon Murray | ||
| dimensions & weights | |||
| Wheelbase | 2735 mm | 107.7 inches | |
| Track/tread (front) | 1591 mm | 62.6 inches | |
| Track/tread (rear) | 1530 mm | 60.2 inches | |
| Length | 4398 mm | 173.1 inches | |
| Width | 1850 mm | 72.8 inches | |
| Height | 1135 mm | 44.7 inches | |
| Ground clearance | 120 mm | 4.7 inches | |
| length:wheelbase ratio | 1.61 | ||
| Kerb weight | 1108 kg | 2443 lb | |
| Weight distribution | |||
| fuel tank capacity | 75 litres | 16.5 [19.8] UK [US] gal. | |
| aerodynamics | |||
| Drag coefficient | |||
| Frontal area | |||
| CdA | |||
| Powertrain | |||
| engine type | naturally aspirated petrol | ||
| Engine manufacturer | Cosworth | ||
| Engine code | Cosworth GMA.2 | ||
| Cylinders | V 12 in 65° vee | ||
| Capacity | 4 litre 3994 cc (243.729 cu in) |
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| Bore × Stroke | 81.5 × 63.8 mm
3.21 × 2.51 in |
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| Bore/stroke ratio | 1.28 | ||
| Valve gear | double overhead camshaft (DOHC)
4 valves per cylinder 48 valves in total |
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| maximum power output | 617 PS (609 bhp) (454 kW) at 10250 rpm |
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| maximum torque | 451 Nm (333 ft·lb) (46 kgm) at 6750 rpm |
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| Specific output | 113.7 kW/litre 154.6 ps/litre 152.5 bhp/litre 2.5 bhp/cu in |
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| Specific torque |
112.92 Nm/litre
1.36 ft·lb/cu3 |
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| Engine construction | aluminium alloy block & head | ||
| Lubrication | dry sumped | ||
| compression ratio | 14:1 | ||
| Fuel system | direct petrol injection | ||
| bmep (brake mean effective pressure) | 1419 kPa (205.8 psi) | ||
| Maximum RPM | 11100 rpm | ||
| crankshaft bearings | |||
| Engine coolant | Water | ||
| Unitary capacity | 332.83 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalytic converter | Y | ||
| 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 | 335 km/h (208 mph) | ||
| Power-to-weight ratio | Higher is better 557.28 PS/tonne (1000 kg) 0.56 PS/kg 409.87 kW/tonne (1000 kg) 0.41 kW/kg 549.64 bhp/tonne (1000 kg) 0.55 bhp/kg 0.25 bhp/lb |
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| Weight-to-power ratio | Lower is better 2.44 kg/kW 4.08 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 | mid | ||
| Engine layout | longitudinal | ||
| Drive wheels | rear wheel drive | ||
| Torque split | N/A | ||
| Steering | power assisted rack & pinion | ||
| turns lock-to-lock | |||
| Turning circle | |||
| Front suspension | |||
| Rear suspension | |||
| Wheel size front | 8½ x 19 | ||
| Wheel size rear | 10½ x 20 | ||
| Tyres front | Michelin Pilot Sport 4 235/35 R 19 | ||
| Tyres rear | Michelin Pilot Sport 4 295/30 R 20 | ||
| Brakes F/R | VeDi/VeDi-S-ABS | ||
| Front brake diameter | 370 mm | ||
| Rear brake diameter | 340 mm | ||
| Braked area | |||
| Gearbox | 6 speed manual | ||
| Top gear ratio | |||
| Final drive ratio | |||
| general | |||
| Carfolio.com ID | 795212 | ||
| Production total | 100 | ||
| Model code | |||
| RAC rating | 49.4 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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2023 GMA T.33 Spider added 2023-04-04. Last modified 2023-04-04. |
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