March 75A

{{Multiple issues|

{{more citations needed|date=June 2022}}

{{notability|Sports|date=June 2022}}

}}

{{Infobox racing car

| Car_name = March 75A

| Category = Formula 5000

| Constructor = March

| Drivers = {{flagicon|AUS}} Alan Jones

| Chassis = Aluminium monocoque with load-bearing engine-transmission assembly, fiberglass and aluminum body

| Front suspension = Independent, wishbones and inclined coil spring/shock absorber units

| Rear suspension = Independent, single top link, twin tower links and coil spring/shock absorber units

| Engine name = Mid-engine, longitudinally mounted, {{cvt|3.4|L|cuin|1}}, Ford-Cosworth GAA, 90° V6, NA

| Type = Hewland 5-speed manual

| Differential =

| Fuel =

| Tyres =

| Weight = {{cvt|1500|lb|kg||}}

| Debut = 1975

| Successor = March 76A

}}

The March 75A was an open-wheel formula racing car, designed, developed and built by British manufacturer and constructor, March Engineering, for Formula 5000 racing, in 1975. It was based on the March 761 Formula One car. Unlike most other F5000 cars of the time, which used {{cvt|5.0|L|cuin}} V8 engines, the 75A used a smaller {{cvt|3.4|L|cuin}} Ford-Cosworth GAA V6 engine (which was still allowed; and permitted with F5000 regulations), which produced between {{cvt|420-470|hp|kW}} @ 9,000 rpm, depending on tuning and spec. Engines up to {{cvt|5000|cc|cuin}} could be used, so this was still perfectly in line with the regulations.{{Cite web|url=http://www.titanhistoricracing.co.uk/people/1975-march-75a/|title=1975 March 75A|website=TitanHistoricRacing.co.uk|access-date=5 July 2024}}{{Cite web|url=https://www.oldracingcars.com/march/75a/|title=March 75A history|first=Allen|last=Brown|website=OldRacingCars.com|date=2 August 2023|access-date=5 July 2024}}{{cite web|url=http://www.dlg.speedfreaks.org/archive/cars/march/autos/3300.php|title=March 75A-Ford Cosworth GAA|website=dlg.speedfreaks.org|access-date=23 June 2022}}{{Cite web|url=https://www.gtplanet.net/forum/threads/march-75a-f5000-1975.316356/|title=March 75A F5000 1975|website=GTPlanet|date=2 September 2014|access-date=5 July 2024}}