• Mini Modified Tractors are those using engine(s) up to a maximum capacity of 375 cubic inch.
  • The engine may employ a roller camshaft and be Naturally Aspirated with a maximum of one venturi per cylinder
    (i.e: dual 4 barrel carburettors are allowed), no blowers or turbo charging. All engines are limited to two valves,
    one spark plug per cylinder.
  • LS series engines must use OEM cylinder heads and thermoplastic inlet manifolds. Must use factory electronic fuel injection and fuel injection system and fuel injector.
  • Transmissions and Differentials must be derived from passenger cars or trucks. No planetary racing transmissions,
    slider clutches, quick change differentials are permitted.
  • Weight class is: 900kg, including driver and safety apparel.
  • No portion of a mini modified tractor may exceed 8 feet forward of the centre of the rear wheel, including removable ballast.
  • No portion of the tractor shall exceed 6 feet in width.