| Production | |
| Manufacturer | Big Bud |
| Four-wheel Drive (4WD) tractor | |
| Built in Havre, Montana, USA | |
| Original price was $117,000 | |
| The Cummins KT-1150-C400 was also available as a special-order engine option on the Big Bud 400/30. | |
| Big Bud 400/30 Engine | |
| Detroit Diesel 12.1L 8-cyl diesel | |
| Fuel tank | 550 gal 2081.8 L |
| Big Bud 400/30 Transmission | |
| 6-speed power shift | |
| Big Bud 400/30 Power | |
| Engine | 400 hp 298.3 kW |
| Mechanical | |
| Four-wheel drive | |
| Final drives | planetary |
| Articulated power steering | |
| Pneumatic drum brakes | |
| Cruiser Cab standard with air-conditioning. | |
| Photos | |
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| Hydraulics | |
| Type | closed center load sensing |
| Valves | 4 |
| Pump flow | 36 gpm 136.3 lpm |
| Steering flow | 35 gpm 132.5 lpm |
| Dimensions & Tires | |
| Wheelbase | 150 inches 381 cm |
| Weight | 40000 lbs 18144 kg |
| Front tire | 24.5-32 |
| Rear tire | 24.5-32 |
| Electrical | |
| Ground | negative |
| Charging system | alternator |
| Charging amps | 75 |
| Battery volts | 12 |
| References | |
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| 400/30 400/20 published in 1978, by Big Bud | |
| No Excuses published in 1980, by Big Bud | |
| Size Us Up published in 1979, by Big Bud |
| Page information | |
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| TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. | |
| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on March 29, 2022 |