The Big Bud 450 is a four-wheel drive (4WD) farm tractor produced by Big Bud from 1986 to 1989. It is part of the 4 Series and was built in Havre, Montana, USA, with only 7 units produced. It features a Detroit Diesel 8V92TA turbocharged aftercooled 8-cylinder liquid-cooled diesel engine with 450 hp (335.6 kW) output. The tractor has a 12-speed full power shift transmission with 12 forward and 2 reverse gears, hydrostatic power steering, and a standard cab. It weighs 40,000 lbs (18144 kg) and uses a negative ground electrical system.
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