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Big Bud Tractor. Big Bud Tractor. 16-V 747 Big Bud The World's Largest Farm Tractor. In 1977 the Big Bud 747 tractor was built in Havre, Montana. The tractor was built by Ron Harmon and the crew of the Northern Manufacturing Company. The tractor was built to produce 760 horsepower using a 16-cylinder Detroit Diesel engine. The tractor measures 27 feet long, 20 feet wide, and 14 feet tall.
Kubota plans 200hp tractor. Kubota has revealed that it will launch a tractor with up to 200hp under the bonnet within the next three years. The biggest tractor in the current line-up is 135hp, but at a press conference at its headquarters in Osaka last week, Kubota said it would have a machine with up to 200hp by 2016. Very few details were given, but these are likely to be lightweight four-cylinder tractors with semi-powershift and CVT transmission options.