March 731
| Category | Formula One | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Constructor | March Engineering | ||||||||||
| Designer(s) | Robin Herd | ||||||||||
| Predecessor | March 721 | ||||||||||
| Successor | March 741 | ||||||||||
| Technical specifications | |||||||||||
| Chassis | Aluminium monocoque | ||||||||||
| Axle track | 1,448 mm (57.0 in) (Front) 1,448 mm (57.0 in) (Rear) | ||||||||||
| Wheelbase | 2,438 mm (96.0 in) | ||||||||||
| Engine | Ford-Cosworth DFV 2,993 cc (182.6 cu in) 90° V8 naturally aspirated mid-mounted | ||||||||||
| Transmission | 1976: Hewland DG 400 6-speed manual. 1977: Hewland FGA 400 6-speed manual. | ||||||||||
| Weight | 1,270 lb (580 kg) | ||||||||||
| Tyres | Goodyear Firestone | ||||||||||
| Competition history | |||||||||||
| Notable entrants | March Engineering | ||||||||||
| Debut | 1973 Spanish Grand Prix | ||||||||||
| |||||||||||
| Constructors' Championships | 0 | ||||||||||
| Drivers' Championships | 0 | ||||||||||
| n.b. Unless otherwise stated, all data refer to Formula One World Championship Grands Prix only. | |||||||||||
The March 731 was a Formula One racing car designed by Robin Herd of March Engineering for the 1973 season which saw continued use through 1974.