Brand siblingBig Bud KT400
The Big Bud KT400 is a powerful utility tractor built for heavy-duty farm work. It has a strong four-wheel drive system and uses hydrostatic power steering, making it easy to control despite its large size. The tractor weighs 40,000 pounds, which is very heavy compared to most tractors. Under the hood, the KT400 has a Cummins diesel engine with six cylinders. This engine is turbocharged and liquid-cooled, giving it lots of power. It can produce 450 horsepower, which is much more than most tractors. The engine size is also very large at 1150 cubic inches. The tractor has a Fuller Road Ranger transmission with 13 forward gears and 2 reverse gears, allowing for smooth operation in different conditions. With its high power and weight, the Big Bud KT400 is built to handle tough jobs on large farms.
Quick specs
- Category
- Utility
- Engine Power Output
- 450hp
- Operating Weight
- 40,000 lb
- Transmission
- Fuller Road Ranger
At a glance
How the KT400 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
This model
The KT400 ranks at the 99th percentile for engine power among recorded utility tractors.
Overview
About the Big Bud KT400
The Big Bud KT400 is a powerful utility tractor built for heavy-duty farm work. It has a strong four-wheel drive system and uses hydrostatic power steering, making it easy to control despite its large size. The tractor weighs 40,000 pounds, which is very heavy compared to most tractors. Under the hood, the KT400 has a Cummins diesel engine with six cylinders. This engine is turbocharged and liquid-cooled, giving it lots of power. It can produce 450 horsepower, which is much more than most tractors. The engine size is also very large at 1150 cubic inches. The tractor has a Fuller Road Ranger transmission with 13 forward gears and 2 reverse gears, allowing for smooth operation in different conditions. With its high power and weight, the Big Bud KT400 is built to handle tough jobs on large farms.
Full specifications
Every recorded spec
General
| Manufacturer | Big Bud |
|---|---|
| Model | KT400 |
| Category | Utility tractor |
| Type | 4x4 4WD |
| Operating weight | 40,000lb |
Engine
| Make | Cummins |
|---|---|
| Power | 450hp |
| Cylinders | 6 |
| Displacement | 1,150ci |
| Bore | 6.25in |
| Stroke | 6.25in |
Transmission
| Type | Fuller Road Ranger |
|---|---|
| Forward gears | 13 |
| Reverse gears | 2 |
Chassis & drive
| Chassis | 4x4 4WD |
|---|---|
| Drive | Four-Wheel Drive (4WD) |
| Steering | Hydrostatic Power |
Dimensions
| Operating weight | 40,000lb |
|---|
Head to head
KT400 vs. Utility median
How the Big Bud KT400 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 450 hp | 55 hp | +718% | 99th |
| Engine Displacement | 1,150 ci | 183 ci | +528% | 99th |
| Cylinders | 6 | 4 | +50% | 93rd |
| Forward Gears | 13 | 12 | +8% | 63rd |
| Operating Weight | 40,000 lb | 5,303 lb | +654% | 99th |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 4,941–5,720 models).
Compare to tractors with similar specs
Commonly compared Big Bud tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Big Bud 450 | 450 hp | 40,000 lb | — | Compare → |
| Big Bud 450/20 | 450 hp | 41,500 lb | — | Compare → |
| Big Bud 450/50 | 450 hp | 41,500 lb | — | Compare → |
| Big Bud 440 | 440 hp | 40,000 lb | — | Compare → |
| Big Bud 402 | 402 hp | 40,000 lb | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| CaseIH Steiger 450 | 450 hp | 36,048 lb | — | Compare → |
| CaseIH Steiger 450 Quadtrac | 450 hp | 53,554 lb | — | Compare → |
| CaseIH Steiger 450 Rowtrac | 450 hp | 55,785 lb | — | Compare → |
| CaseIH Steiger 435 | 435 hp | 41,605 lb | — | Compare → |
| CaseIH Steiger 435QT Quadtrac | 435 hp | 48,150 lb | — | Compare → |
Explore
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FAQ
Common questions
How much horsepower does the Big Bud KT400 have?
The Big Bud KT400 produces 450 hp from its 6-cylinder engine. Engine displacement is 1,150 ci.
How much does the Big Bud KT400 weigh?
The Big Bud KT400 weighs about 40,000 lb in operating condition.
What transmission is in the Big Bud KT400?
Transmission on the Big Bud KT400 is Fuller Road Ranger, with 13 forward speeds.
What maintenance does the Big Bud KT400 require?
Like any tractor, the Big Bud KT400 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.


