The Australian National Formula (often abbreviated to ANF) was an Australian motor racing category which was introduced by the Confederation of Australian Motor Sport

Confederation of Australian Motor Sport

The Confederation of Australian Motor Sport , has been the governing body of Australian motorsport since 1953. It is affiliated with the Federation Internationale de l'Automobile ....

 in 1964 and remained current until the end of 1969. It replaced Formula Libre

Formula Libre

Formula Libre is a form of automobile racing allowing a wide variety of types, ages and makes of purpose-built racing cars to compete "head to head". This can make for some interesting matchups, and provides the opportunity for some compelling driving performances against superior machinery...

 as the Australian premier racing formula .

The Australian National Formula specified single seat racing cars fitted with unsupercharged engines of no greater than 2.5 litres capacity running on commercially available fuel . This encouraged the use of engines such as the Coventry Climax

Coventry Climax

Coventry Climax was a British forklift truck, fire pump, and speciality engine manufacturer.-History:The company was started in 1903 as Lee Stroyer, but two years later, following the departure of Stroyer, it was relocated to Paynes Lane, Coventry, and renamed to Coventry-Simplex by H...

 FPF unit which had been prominent in the 2.5 litre FIA Formula One

Formula One

Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...

 category prior to the downsizing of that formula for 1961. The Australian National Formula was renamed for 1970, officially becoming Australian Formula 1

Australian Formula 1

Australian Formula 1 was a motor sport category for open-wheeler racing cars which was current in Australia from 1970 to 1983.AF1 was introduced by the Confederation of Australian Motor Sport in 1970, initially restricting cars to unsupercharged engines of no greater than 2.5-litre capacity,...

 (AF1) .

The Australian Drivers' Championship

Australian Drivers' Championship

The Australian Drivers' Championship is a motor racing championship which has been contested annually since 1957 by drivers of cars complying with Australia's premier open-wheeler racing category as determined by the Confederation of Australian Motor Sport. Since 2005 this category has been Formula...

 (for the CAMS Gold Star award) and the Australian Grand Prix

Australian Grand Prix

The Australian Grand Prix is a motor race held annually and is held to be the pinnacle of motor racing in Australia. The Grand Prix is the oldest surviving motor racing competition held in Australia having been held 76 times since it was first run at Phillip Island in 1928. Since 1985 the race has...

 were both open to drivers of Australian National Formula cars throughout the life of the formula, i.e. from 1964 to 1969 . The formula was also utilised for the Tasman Cup series during these years .