Article · Wikipedia archive · Last revised Jul 18, 2026

March 73A

The March 73A was an open-wheel formula racing car, designed, developed, and built by British manufacturer and constructor, March Engineering, for Formula 5000 racing, between 1973 and 1974. It competed in both the European and SCCA U.S. F5000 championships. It also competed in one non-championship Formula One World Championship Grand Prix; the 1973 Race of Champions. It was later converted into a closed-wheel Can-Am-style prototype chassis, where it competed in the 1984 championship.

Last revised
Jul 18, 2026
Read time
≈ 1 min
Length
175 w
Citations
5
Source
John Cannon's 73A source ↗
2025 Long Beach Grand Prix source ↗
March 73A
CategoryFormula 5000
ConstructorMarch
PredecessorMarch 72A
Technical specifications
ChassisAluminium monocoque with load-bearing engine-transmission assembly, fiberglass and aluminum body
Suspension (front)Independent, wishbones and inclined coil spring/shock absorber units
Suspension (rear)Independent, single top link, twin tower links and coil spring/shock absorber units
EngineMid-engine, longitudinally mounted, 5.0 L (305.1 cu in), Chevrolet, 90° V8, NA
TransmissionHewland DG300 5-speed manual
Weight1,500 lb (680 kg)
Competition history
Notable driversUnited States Skip Barber
United States John Gunn
United States Bill Tempero
United Kingdom Clive Baker
Canada John Cannon
Debut1973

The March 73A was an open-wheel formula racing car, designed, developed, and built by British manufacturer and constructor, March Engineering, for Formula 5000 racing, between 1973 and 1974.12 It competed in both the European and SCCA U.S. F5000 championships.3 It also competed in one non-championship Formula One World Championship Grand Prix; the 1973 Race of Champions.4 It was later converted into a closed-wheel Can-Am-style prototype chassis, where it competed in the 1984 championship.5

References

References

  1. Brown, Allen. "March 73A car-by-car histories". OldRacingCars.com.
  2. "March". www.f5000registry.com.
  3. "March « F5000 « OldRacingCars.com". www.oldracingcars.com.
  4. "March 73/A Formula 5000". racecarsdirect.com.
  5. "March 73A". Retrieved 14 January 2023.