big bud 400 20
![]() | 1979 - 1981
3 SeriesFour-wheel Drive (4WD) tractor | 1979 - 1981 | 3 Series | Four-wheel Drive (4WD) tractor |
|---|---|---|---|---|
1979 - 1981 | ||||
3 Series | ||||
Four-wheel Drive (4WD) tractor | ||||
1979 - 1981 | |
|---|---|
3 Series | |
Four-wheel Drive (4WD) tractor |
Production | |
|---|---|
Manufacturer | Big Bud |
Four-wheel Drive (4WD) tractor | |
Built in Havre, Montana, USA | |
Original price was $109,000 in 1978 | |
Variants | |
|---|---|
400/20 | gear shift |
400/30 | power shift |
Big Bud 400/20 Engine | |
|---|---|
Detroit Diesel 12.1L 8-cyl diesel | |
Fuel tank | 550 gal
2081.8 L |
Engine details ... | |
Big Bud 400/20 Transmission | |
|---|---|
12-speed gear | |
Transmission details ... |
Big Bud 400/20 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. | |
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 |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 75 |
Battery volts | 12 |
References | |
|---|---|
![]() | |
400/30 400/20 published in 1978, by Big Bud | |
Size Us Up published in 1979, by Big Bud |
Recommended Products
Advertisement · Featured Tractor-Related Products

Hy-Gard Transmission & Hydraulic Oil
Genuine OEM Part Number: TY22000 An exclusive formulation, specifically designed to protect John Deere transmissions, final drives, and hydraulic systems.

Xprite 30 LED Amber Forklift Beacon Strobe Light Safety Warning Flashing Lights
★ FEATURE: This Warning Beacon Strobe Light Total of 30 High Brightness SMD 5730 LEDs with Low Polycarbonate Dome, More Clearer Vision Can Provides 360 Degrees of Coverage. Lifespan Up to 50,000 Hours. ★ PATTERN: 3 Bright Flashes With 1 Second In Between. Durable PC Lens And Better Light Quality. Low Power Consumption And Low Heat. Self-Contained LED, No External Flasher Required.

Turf-Gard SAE 10W-30 Oil TWO Quarts
4-Cycle engine oil For gas engines only SAE 10W-30 Provides maximum protection for lawn and utility equipment 946mL / 32 fl. Oz per quart - TWO quarts included

Heavy Duty Pistol Grip Grease Gun Kit
🚜 Power Performance: 8000psi Max working pressure guaranteed by iron die cast head and enhanced sealing. 🚜 Ergonomic Design: Pistol grip lets you operate with one hand. Sand blasted grid surface increases friction for safety.
* This page contains affiliate links, purchases may generate revenue for this site

