The Australian 1½ Litre Formula was a motor racing category which was current in

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

from 1964 to 1968. The formula specified

racing cars Auto racing (also known as car racing, motor racing, or automobile racing) is a motorsport involving the racing of automobiles for competition. Auto racing has existed since the invention of the automobile. Races of various sorts were organise ...

with four-cylinder unsupercharged engines using commercially available fuel and limited to 1500cc capacity. It occupied the second tier in Australian formula car racing, below the

Australian National Formula The Australian National Formula (often abbreviated to ANF) was an Australian motor racing category which was introduced by the Confederation of Australian Motor Sport in 1964 and remained current until the end of 1969. It had replaced Formula Libre ...

(which specified a 2500cc engine capacity limit) and above

Australian Formula 2 Australian Formula 2, sometimes abbreviated to AF2 or ANF2, is a "wings and slicks" formula racing category in Australia. The category is one of Australia's oldest, dating back to 1964. The current format of AF2 was introduced in 1978. Brian Shea ...

(1100cc) and

Australian Formula 3 Australian Formula 3 has been the name applied to two distinctly different motor racing categories, separated by over twenty years. The original Australian Formula 3 was introduced in 1964 based on the FIA Formula 3 of the period and intended ...

(1000cc). Drivers of Australian 1½ Litre Formula cars contested their own national title, the Australian 1½ Litre Championship and were also eligible to compete alongside Australian National Formula drivers in the

Australian Drivers' Championship The Australian Drivers' Championship was a motor racing championship contested annually from 1957 to 2014 by drivers of cars complying with Australia's premier open-wheeler racing category as determined by the Confederation of Australian Motor ...

, the

Australian Grand Prix The Australian Grand Prix is an annual motor racing event which is under contract to host Formula One until 2035. One of the oldest surviving motorsport competitions held in Australia, the Grand Prix has moved frequently with 23 different venu ...

and the Tasman Cup Series. The Australian 1½ Litre Formula was discontinued as at the end of 1968 and the engine capacity limit for Australian Formula 2 was raised from 1100cc to 1600cc for 1969.The Macquarie Dictionary of Motoring, 1986, page 172

References

{{DEFAULTSORT:Australian 1 Litre Formula Formula racing Motorsport categories in Australia