Tractor · 1979Unverified
Big Bud 400/20
Big Bud 400/20 — 3 Series · 400 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
400 hp
Weight
18144 kg
Hover a source tag to verify
Overview
ManufacturerBig BudReference
Four-wheel Drive (4WD) tractorReference
Built in Havre, Montana, USAReference
Original price was $109,000 in 1978Reference
Four-wheel driveReference
Final drivesplanetaryReference
Articulated power steeringReference
Pneumatic drum brakesReference
Cruiser Cab standard with air-conditioning.Reference
Variants
400/20gear shiftReference
400/30power shiftReference
Engine
Detroit Diesel 12.1L 8-cyl dieselReference
Fuel tank2081.8 LReference
Engine298.3 kWReference
Detroit Diesel 8V-92TReference
turbocharged dieselReference
8-cylinderReference
liquid-cooledReference
Displacement12.1 LReference
Bore/Stroke123 x 127 mmReference
Power298.3 kWReference
Compression19:1Reference
Rated RPM2100Reference
StarterelectricReference
Starter volts24Reference
Transmission
12-speed gearReference
TransmissionFuller Roadranger RT 12513Reference
TypegearReference
Gears12 forward and 2 reverseReference
PTO & Hydraulics
Typeclosed center load sensingReference
Valves4Reference
Pump flow136.3 lpmReference
Steering flow132.5 lpmReference
Dimensions
Wheelbase381 cmReference
Weight18144 kgReference
Front tire24.5-32Reference
Rear tire24.5-32Reference
Ag front24.5-32Reference
Ag rear24.5-32Reference
Ag front30.5-32Reference
Ag rear30.5-32Reference
Length679 cmReference
Width304 cmReference
Height (cab)367 cmReference
Height (exhaust)396 cmReference
Shipping weight18144 kgReference
Max weight22680 kgReference
Ground clearance36 cmReference
Electrical
GroundnegativeReference
Charging systemalternatorReference
Charging amps75Reference
Battery volts12Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.