Big Bud 450/20
The Big Bud 450/20 is a tractor produced by Big Bud. It is equipped with a 1150 ci 18.8 L engine. The listed engine power is Diesel (listed): 450 hp / 335.6 kW. Transmission: Fuller. Drive type: 4x4 4WD. Operating weight: 41,500 lbs 18824 kg.
Engine Power
Diesel (listed): 450 hp / 335.6 kW
Drive & Traction
4x4 4WD
Transmission
Fuller
Operating Weight
41,500 lbs
18824 kg
Overview
 | 1979
3 SeriesFour-wheel Drive (4WD) tractor
3 Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | Big Bud |
Four-wheel Drive (4WD) tractor | |
Built in Havre, Montana, USA | |
Variants | |
|---|---|
450/20 | gear shift |
450/50 | power shift |
Big Bud 450/20 Engine | |
|---|---|
Cummins 18.8L 6-cyl diesel | |
Engine details ...  |
Big Bud 450/20 Transmission | |
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12-speed gear | |
Transmission details ...  |
Big Bud 450/20 Power | |
|---|---|
Engine | 450 hp
335.6 kW |
Mechanical | |
|---|---|
Drive | 4x4 4WD |
Steering | hydrostatic power |
Cruiser Cab standard. | |
Dimensions & Tires | |
|---|---|
Weight | 41,500 lbs
18824 kg |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
Size Us Up published in 1979, by Big Bud |
Engine
Engine Detail — 1150 ci / 18.8 L Diesel
Manufacturer | Cummins |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 1150 ci
18.8 L |
Bore/Stroke | 6.25x6.25 inches
159 x 159 mm |
Power | 450 hp
335.6 kW |
Rated RPM | 2100 |
Starter type | electric |
Transmission
Transmission — Fuller
Transmission | Fuller |
Type | gear |
Gears | 12 forward and 2 reverse |
Dimensions
Big Bud 450/20 Tires |
|---|
Dimensions | |
|---|---|
Weight | 41,500 lbs
18824 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for Big Bud 450/20 based on its 450 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 450/20.
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 450/20 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Big Bud 450/20.
Converted Equivalents:
Horsepower (HP)450 hp
Kilowatts (kW)335.6 kW
Metric Horsepower (PS / CV)456.2 PS
Direct Competitor Comparison
Compare Big Bud 450/20 against same-era industry alternatives in the same horsepower class.
Current Model
Big Bud
Big Bud 450/20
Engine Power:Diesel (listed): 450 hp / 335.6 kW
★ Baseline Reference
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