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March 721X
| Tuner | |
| Country | GB |
| Year | 1972 |
| Engine | Ford Cosw. DFV S12 |
| Engine Type | 90°V8 |
| Cams | 4 |
| Valves/cyl | 4.0000 |
| Compression | "11,0" |
| Bore | 85.700 |
| Stroke | 64.800 |
| Capacity (cc) | 2990 |
| Power (at revs) | 450 HP/10000 |
| Torque | |
| Induction | |
| Ignition | Lucas opus |
| Fuel system | Lucas f.i. |
| Chassis type | Aluminium monocoque |
| Body type | single seater |
| Designer | R. Herd |
| Front suspension | |
| Rear suspension | |
| Shock absorbers | Koni |
| Engine position | mid |
| Wheelbase (mm) | |
| Front track (mm) | |
| Rear track (mm) | |
| Weight (kg) | |
| Drive | rear |
| Number of gears | 5 |
| Gearbox | Alfa 33/3 later Hewland FG 400 |
| Fuel tank size (litres) | |
| Brakes | Girling |
| Front brake type | disc |
| Rear brake type | disc |
| Front rims | |
| Rear rims | |
| Tyres | Goodyear |
| Front tyres | 9.0/20.0-13 |
| Rear tyres | 13.0/24.0-13 |
| Maximum speed (kph) | |
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