IT'S one of those pub quiz questions that gets everyone arguing: what is the world's most powerful form of motorsport?

It isn't Formula One, or Top Fuel Dragsters either.

The answer is at Great Eccleston near Blackpool this weekend when Europe's top tractor pullers -- powered by no less than five Chevrolet V8 engines totalling 8,750bhp -- roar into action.

The object of the exercise is for the machines, some powered by World War II aircraft engines, to pull a weight transfer sled over the longest distance in the shortest time.

Thousands of motorsport fans are expected to descend on the Lancashire village to see competitors from all over Europe contest The British Tractor Pulling Championship.

And it is one branch of the sport that the British are good at.

Brian Armistead, from the Fylde, has been European champion no less than 12 times and he'll be going for a lucky 13th title on the purpose built track at Great Eccleston.

The competition starts at 6pm tonight under floodlights and continues tomorrow at 11am. For further information visit: www.tractorpulling.co.uk.