Compare/J.I. Case 380B Construction King vs J.I. Case 520
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J.I. Case 380B Construction King vs J.I. Case 520

Verdict: J.I. Case 380B Construction King vs J.I. Case 520

The J.I. Case 380B Construction King and the J.I. Case 520 are both industrial tractors — here is how they stack up on the figures that matter. J.I. Case 520 leads on rated power with 55 hp against 53 hp. J.I. Case 380B Construction King is the lighter machine (2,381 kg vs 3,487 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. J.I. Case 380B Construction King is the newer design (1985 vs 1954). In short: choose the J.I. Case 520 for outright pulling power, or the J.I. Case 380B Construction King if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
J.I. Case 380B Construction King Industrial Tractor
J.I. Case
62
Fit score
Best match
Clear
J.I. Case 520 Industrial Tractor
J.I. Case
62
Fit score
Best match
Clear
Rated power
53 hp
55 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
J.I. CaseReference
J.I. CaseReference
With 14.9x24 rear tires.Reference
liquid-cooledReference
Total built
265Reference
Final drives
roller chainReference
Steering
powerReference
Variants
485
farm tractorReference
500
farm tractorReference
380B
general-purposeReference
380B LCG
low center of gravityReference
Engine
Engine (gross)
39.5 kWReference
Engine (net)
37.3 kWReference
Drawbar (claimed)
28.4 kWReference
Displacement
2.9 LReference
6.2 LReference
Bore/Stroke
99 x 129 mmReference
102 x 127 mmReference
Power (net)
37.3 kWReference
Power (gross)
39.5 kWReference
Air cleaner
dual dry elementReference
oil bathReference
Pre-heating
ether injectionReference
ether injectionReference
Compression
16:1Reference
Rated RPM
2200Reference
1350Reference
Torque
188.5 NmReference
Torque RPM
1600Reference
Starter
electricReference
Starter volts
12Reference
12Reference
Oil capacity
34.1 LReference
13.2 LReference
Coolant capacity
11.4 LReference
Idle RPM
600-1500Reference
Firing order
1-5-3-6-2-4Reference
Intake valve clearance
0.305 mmReference
Exhaust valve clearance
0.305 mmReference
Transmission
Gears
8 forward and 4 reverseReference
4 forward and 1 reverseReference
Clutch
279mm dry discReference
381mm dry discReference
PTO & Hydraulics
PTO (claimed)
31.6 kWReference
41.0 kWReference
Hydraulic system
136.3 LReference
13.2 LReference
Type
partially synchronizedReference
gearReference
Capacity
136.3 LReference
13.2 LReference
Pressure
172.4 barReference
71.0 barReference
SCV flow
45.4 lpmReference
Total flow
58.3 lpmReference
Steering flow
9.5 lpmReference
Rear Type
II/IReference
Control
position and draft controlReference
Rear lift (at ends)
1406 kgReference
Rear lift (at 24"/610mm)
1224 kgReference
Rear PTO
independentReference
independentReference
Rear PTO Type
540 (1.375)Reference
540 (1.375)Reference
Engine RPM
540@1934Reference
540@1350Reference
Pump flow
75.7 lpmReference
Capacities
Fuel
75.7 LReference
113.6 LReference
Dimensions
Wheelbase
200 cmReference
222 cmReference
Weight
2381 kgReference
3487 kgReference
Front tire
7.50x16Reference
9x15Reference
Rear tire
14.9x24Reference
18x26Reference
Industrial front
7.50x16Reference
10x15Reference
Industrial rear
14.9x24Reference
15x30Reference
Length
360 cmReference
345 cmReference
Width
193 cmReference
222 cmReference
Ground clearance
32 cmReference
Front tread
132 to 203 cmReference
157 cmReference
Rear tread
152 to 165 cmReference
167 cmReference
Shipping
2381 kgReference
Max front axle
2799 kgReference
Max rear axle
4199 kgReference
Steering wheel
151 cmReference
182 cmReference
Shipping weight
3487 kgReference
Clearance (front axle)
38 cmReference
Electrical
Ground
negativeReference
negativeReference
Charging system
alternatorReference
generatorReference
Charging amps
45Reference
Battery CCA
605Reference
Battery volts
12Reference
6Reference
Batteries
2Reference
Battery AH
200Reference
J.I. Case 380B Height
ROPS
233 cmReference
Exhaust
256 cmReference
228 cmReference
Speeds
520 Serial Numbers
Location:
Serial number plate on the right side of the battery support.Reference
J.I. Case 520 Height
Hood
156 cmReference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.

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