Big Bud
Big Bud 400/30
The Big Bud 400/30 is a four-wheel drive farm tractor produced from 1979 to 1981 by Big Bud in Havre, Montana, USA. It features a Detroit Diesel 8V-92T turbocharged 8-cylinder liquid-cooled engine with 400 hp (298.3 kW) power output. The tractor has a 6-speed power shift transmission (Twin Disc TD-61-1154) and planetary final drives. It includes articulated power steering, pneumatic drum brakes, and a Cruiser Cab with air-conditioning. The hydraulics system is closed center load sensing with 4 valves and a pump flow of 36 gpm (136.3 lpm). Dimensions include a 150 inch (381 cm) wheelbase, 267.6 inch (679 cm) length, and a shipping weight of 40000 lbs (18144 kg). The tractor uses 24.5-32 and 30.5-32 agricultural tires front and rear. Electrical system features a 12 volt battery with a 75 amp alternator charging system.
Power400 hp
Founded1979 - 1981
Model400/30
Technical Specifications
Detailed specifications and technical data for Big Bud 400/30
Power
| Engine power | 400 hp (298.3 kW) |
|---|
Tires
| Ag rear | 24.5-32, 30.5-32 |
|---|---|
| Ag front | 24.5-32, 30.5-32 |
Engine
| Type | turbocharged diesel |
|---|---|
| Model | Detroit Diesel 8V-92T |
| Power | 400 hp (298.3 kW) |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 8-cylinder |
| Fuel tank | 550 gal (2081.8 L) |
| Rated RPM | 2100 |
| Bore/Stroke | 4.84x5.00 inches (123 x 127 mm) |
| Compression | 19:1 |
| Displacement | 736 ci (12.1 L) |
| Starter volts | 24 |
Variants
| 400/20 | gear shift |
|---|---|
| 400/30 | power shift |
Dimensions
| Width | 120 inches (304 cm) |
|---|---|
| Length | 267.6 inches (679 cm) |
| Wheelbase | 150 inches (381 cm) |
| Max weight | 50000 lbs (22680 kg) |
| Height (cab) | 144.5 inches (367 cm) |
| Shipping weight | 40000 lbs (18144 kg) |
| Ground clearance | 14.5 inches (36 cm) |
| Height (exhaust) | 156 inches (396 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging amps | 75 |
| Charging system | alternator |
Hydraulics
| Type | closed center load sensing |
|---|---|
| Valves | 4 |
| Pump flow | 36 gpm (136.3 lpm) |
| Steering flow | 35 gpm (132.5 lpm) |
Mechanical
| Cab | Cruiser Cab standard with air-conditioning |
|---|---|
| Drive | Four-wheel drive |
| Brakes | Pneumatic drum brakes |
| Steering | Articulated power steering |
| Final drives | planetary |
Production
| Type | Four-wheel Drive (4WD) tractor |
|---|---|
| Series | 3 Series |
| Built in | Havre, Montana, USA |
| Original price | $117,000 |
| Years produced | 1979 - 1981 |
| Special order engine option | Cummins KT-1150-C400 |
Transmission
| Type | power shift |
|---|---|
| Gears | 6 forward and 1 reverse |
| Model | Twin Disc TD-61-1154 |