Big Bud 402
The Big Bud 402 is a tractor produced by Big Bud. It is equipped with a 893 ci 14.6 L engine. The listed engine power is Diesel (listed): 402 hp / 299.8 kW. Transmission: 12 forward and 2 reverse. Drive type: 4x4 4WD. Operating weight: 40,000 lbs 18144 kg.
Engine Power
Diesel (listed): 402 hp / 299.8 kW
Drive & Traction
4x4 4WD
Transmission
12 forward and 2 reverse
Operating Weight
40,000 lbs
18144 kg
Overview
 | 1986 - 1989
4 SeriesFour-wheel Drive (4WD) tractor
4 Series
Four-wheel Drive (4WD) tractor |
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Production | |
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Manufacturer | Big Bud |
Four-wheel Drive (4WD) tractor | |
Built in Havre, Montana, USA | |
Total built | 2 |
Big Bud 402 Engine | |
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Caterpillar 14.6L 6-cyl diesel | |
Engine details ...  |
Big Bud 402 Transmission | |
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12-speed full power shift | |
Transmission details ...  |
Big Bud 402 Power | |
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Engine | 402 hp
299.8 kW |
Mechanical | |
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Drive | 4x4 4WD |
Steering | hydrostatic power |
Cab standard. | |
Dimensions & Tires | |
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Weight | 40,000 lbs
18144 kg |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Engine
Engine Detail — 893 ci / 14.6 L Diesel
Manufacturer | Caterpillar 3406B |
Configuration | turbocharged intercooled diesel, 6-cylinder, liquid-cooled |
Displacement | 893 ci
14.6 L |
Bore/Stroke | 5.40x6.50 inches
137 x 165 mm |
Power | 402 hp
299.8 kW |
Rated RPM | 2100 |
Starter type | electric |
Transmission
Transmission — 12 forward and 2 reverse full power shift
Type | full power shift |
Gears | 12 forward and 2 reverse |
Dimensions
Big Bud 402 Tires |
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Dimensions | |
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Weight | 40,000 lbs
18144 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for Big Bud 402 based on its 402 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Big Bud 402.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Big Bud 402 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Big Bud 402.
Converted Equivalents:
Horsepower (HP)402 hp
Kilowatts (kW)299.8 kW
Metric Horsepower (PS / CV)407.6 PS
Direct Competitor Comparison
Compare Big Bud 402 against same-era industry alternatives in the same horsepower class.
Current Model
Big Bud
Big Bud 402
Engine Power:Diesel (listed): 402 hp / 299.8 kW
★ Baseline Reference
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