Tractor Information

 

Super Farm

Super farm tractors must retain the original gearbox and rear axle and are limited to a maximum engine size of 401 cubic inches (6.57litre). They can only run a single turbocharger, albeit of any size, and must use diesel fuel only. They are limited to 3000 RPM and compete at 3500kg. Power estimates to be in the region of 500hp.

Rob Roy

Diesel Ross

Mission Impossible

 

Limited Prostock

Limited Prostock tractors must retain the original gearbox and rear axle and are limited to a maximum engine size of 401 cubic inches (6.57litre). They can only run a single turbocharger, albeit of any size, and must use diesel fuel only. There is no RPM limit. These tractors compete at 3500kg. Power is estimated to be up to 900hp.

True Blue

 

Prostock

Prostock tractors are limited to a maximum engine size of 510 cubic inches (8.3litre). They can only run a single turbocharger, albeit of any size, and must use diesel fuel only. There is no RPM limit. These tractors compete at 3500kg. It is not uncommon to see these tractors generate 2000hp.

Pist "n" Broke

 

Superstock

Superstock tractors are limited to a maximum engine size of 650 cubic inches (10.65litre). They can only run up to four turbochargers of any size with a maximum of three pressure stages. Tractors can use either diesel fuel or methanol fuel. There is no RPM limit. These tractors compete at 3500kg. Diesel Superstocks generate in the region of 150psi boost pressure at 5000rpm. Methanol Superstocks tend to run lower boost (70-80psi) but higher rpm (7000+) Power estimates anything from 1800hp to 4000hp.

Perkoil Express

 

Modified

Modified tractors can use any gearbox and any rear axle. There is no engine, turbocharger, fuel or RPM limit. Modifieds may add or remove engines to compete in different weight classes as they can compete at 2500kg, 3500kg and 4500kg. Modifeds are the most spectacular in all Tractor Pulling, where some 4500kg tractors can generate up to 10000hp.

Starlight Express

Supertramp