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

Accessories
Heavy Duty Farm Work Gloves
4.7/5 (256)
Essential protective gear for farm work, durable and slip-resistant
glovessafety+2
Check Price
Link to amzn.to

On Sale
Parts
Universal Tractor Hydraulic Filter Kit
4.2/5 (89)
High-quality filter kit for extended tractor life, compatible with multiple models
hydraulicfilter+2
Check Price
Link to amzn.to

Hot Pick
Accessories
John Deere Original Equipment Cool-Gard II PRE-Mix
5.0/5 (16)
COOL-GARD II PRE-MIX, 1 GAL;3.78L. DO NOT ADD WATER. Prediluted Engine Coolant. Heavy-duty, low-silicate, high performance antifreeze/coolant. This is a OEM John Deere Part.
Check Price
Link to amzn.to

Hot PickOn Sale
Parts
WEIZE Lawn Garden AGM Battery, 12V 350CCA BCI Group U1 SLA Starting Battery
5.0/5 (38)
Power your lawn tractors and mowers with the high-quality Weize BCI group U1 Battery. This SLA, AGM battery provides 12V of reliable power and has a 350 Cold Cranking Amps rating.
Battery
Check Price
Link to amzn.to
* This page contains affiliate links, purchases may generate revenue for this site