Big Bud 400/30
Power
400 hp
Production
1979-1981
Engine
Detroit Diesel 8V-92T, 8-cylinder
Transmission
Twin Disc TD-61-1154
Weight
50000 lbs [22680 kg]
Drive
4WD
Introduction
Big Bud 400/30 Four-Wheel Drive Tractor
The Big Bud 400/30 is a high-horsepower four-wheel drive tractor manufactured in Havre, Montana, USA, between 1979 and 1981. Designed for large-scale agricultural operations, this machine belongs to the heavy-duty tractor segment of its era.
Engine and Power
The tractor is powered by a Detroit Diesel 8V-92T, an 8-cylinder turbocharged liquid-cooled diesel engine. With a displacement of 736 cubic inches (12.1 liters) and a compression ratio of 19:1, it generates 400 horsepower (298.3 kW) at a rated speed of 2100 RPM. A Cummins KT-1150-C400 engine was also available as a special-order alternative.
Transmission and Drive
Power is delivered to the ground through a Twin Disc TD-61-1154 power shift transmission, providing 6 forward and 1 reverse gears. The machine utilizes planetary final drives and an articulated power steering system, allowing for maneuvering the large frame. Stopping power is managed by pneumatic drum brakes.
Hydraulics and Electrical
The hydraulic system features a closed-center load-sensing configuration with a pump flow capacity of 36 gpm (136.3 lpm) and 4 valves to operate various implements. The electrical system operates on 12 volts for the battery and 24 volts for the starter, supported by an alternator with a 75-amp charging capacity.
Dimensions and Weight
The Big Bud 400/30 possesses a 150-inch (381 cm) wheelbase and a total length of 267.6 inches (679 cm). Its shipping weight is 40,000 lbs (18,144 kg), with a maximum operating weight capacity of 50,000 lbs (22,680 kg). Ground clearance is 14.5 inches (36 cm), and the unit is equipped with a standard air-conditioned Cruiser cab.
Conclusion
The Big Bud 400/30 is a robust, high-capacity tractor engineered for heavy primary tillage and intensive field work requiring sustained high power and traction.
Production Information of Big Bud, 400/30
- The Cummins KT-1150-C400 was also available as a special-order engine option on the Big Bud 400/30.
- Original price was $117,000
- Four-wheel Drive (4WD) tractor
- Built in Havre, Montana, USA
| Manufacturer | Big Bud |
|---|
Dimension and Tires Information of Big Bud, 400/30
| Max weight | 50000 lbs [22680 kg] |
|---|---|
| Wheelbase | 150 inches [381 cm] |
| Height (exhaust) | 156 inches [396 cm] |
| Height (cab) | 144.5 inches [367 cm] |
| Length | 267.6 inches [679 cm] |
| Ground clearance | 14.5 inches [36 cm] |
| Shipping weight | 40000 lbs [18144 kg] |
| Width | 120 inches [304 cm] |
| Ag front | 24.5-32 |
|---|---|
| Ag rear | 30.5-32 |
| Ag rear | 24.5-32 |
| Ag front | 30.5-32 |
Engine Specifications of Big Bud, 400/30
- Detroit Diesel 8V-92T
- Liquid-cooled
- Turbocharged diesel
- 8-cylinder
| Starter volts | 24 |
|---|---|
| Displacement | 736 ci [12.1 L] |
| Compression | 19:1 |
| Bore/Stroke | 4.84x5.00 inches [123 x 127 mm] |
| Starter | Electric |
| Rated RPM | 2100 |
| Power | 400 hp [298.3 kW] |
Transmission Information of Big Bud, 400/30
Transmission variants 1
| Transmission | Twin Disc TD-61-1154 |
|---|---|
| Type | Power shift |
| Gears | 6 forward and 1 reverse |
Mechanical Specs of Big Bud, 400/30
- Four-wheel drive
- Cruiser Cab standard with air-conditioning.
- Pneumatic drum brakes
- Articulated power steering
| Final drives | Planetary |
|---|
Power Information of Big Bud, 400/30
| Engine | 400 hp [298.3 kW] |
|---|
Hydraulics Specifications of Big Bud, 400/30
| Type | Closed center load sensing |
|---|---|
| Steering flow | 35 gpm [132.5 lpm] |
| Valves | 4 |
| Pump flow | 36 gpm [136.3 lpm] |
Electrical System of Big Bud, 400/30
| Ground | Negative |
|---|---|
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 75 |
Where it sits
With 400 HP, the Big Bud 400/30 sits between 370 (370 HP) and 402 (402 HP) in Big Bud's range. Its power puts it in the 99th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Big Bud 400/30 have?
The Big Bud 400/30 delivers 400 HP.
What years was the Big Bud 400/30 produced?
The Big Bud 400/30 was produced in 1979-1981.
What engine does the Big Bud 400/30 have?
The Big Bud 400/30 is powered by a Detroit Diesel 8V-92T, 8-cylinder engine.
What transmission does the Big Bud 400/30 use?
The Big Bud 400/30 uses a Twin Disc TD-61-1154 transmission.
How much does the Big Bud 400/30 weigh?
The Big Bud 400/30 weighs 50000 lbs [22680 kg].
Is the Big Bud 400/30 4WD?
The Big Bud 400/30 is available in 4WD.