Compare/J.I. Case 380B Construction King vs J.I. Case 580B Construction King

J.I. Case 380B Construction King vs J.I. Case 580B Construction King

Verdict: J.I. Case 380B Construction King vs J.I. Case 580B Construction King

The J.I. Case 380B Construction King and the J.I. Case 580B Construction King are both industrial tractors — here is how they stack up on the figures that matter. J.I. Case 380B Construction King leads on rated power with 53 hp against 50 hp. J.I. Case 380B Construction King is the lighter machine (2,381 kg vs 4,170 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 1971). In short: choose the J.I. Case 380B Construction King for outright pulling power, or the J.I. Case 580B Construction King if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

J.I. Case

Fit score

Best match

Clear

J.I. Case

Fit score

Best match

Clear

Rated power

53 hp

50 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

J.I. CaseReference

With 14.9x24 rear tires.Reference

With 14.9x24 rear tires and hand controls. Foot pedals limited to 10MPH.Reference

Steering

—

hydrostatic powerReference

Variants

485

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

2.6 LReference

Bore/Stroke

99 x 129 mmReference

89 x 105 mmReference

Power (net)

37.3 kWReference

—

Power (gross)

39.5 kWReference

—

Air cleaner

dual dry elementReference

dry elementReference

Pre-heating

ether injectionReference

—

Compression

16:1Reference

7.42:1Reference

Rated RPM

2200Reference

2100Reference

Torque

188.5 NmReference

165.4 NmReference

Torque RPM

1600Reference

1250Reference

Starter

electricReference

—

Starter volts

12Reference

Oil capacity

34.1 LReference

3.8 LReference

Coolant capacity

11.4 LReference

13.2 LReference

Engine

—

37.3 kWReference

Power

—

32.1 kWReference

Transmission

Gears

8 forward and 4 reverseReference

infinite forward and reverseReference

Clutch

279mm dry discReference

—

PTO & Hydraulics

PTO (claimed)

31.6 kWReference

—

Hydraulic system

136.3 LReference

41.6 LReference

Type

partially synchronizedReference

hydrostaticReference

Capacity

136.3 LReference

41.6 LReference

Pressure

172.4 barReference

151.7 barReference

SCV flow

45.4 lpmReference

—

Total flow

58.3 lpmReference

90.8 lpmReference

Steering flow

9.5 lpmReference

—

Rear Type

II/IReference

optionalReference

Control

position and draft controlReference

—

Rear lift (at ends)

1406 kgReference

—

Rear lift (at 24"/610mm)

1224 kgReference

—

Rear PTO

independentReference

optionalReference

Rear PTO Type

540 (1.375)Reference

—

Engine RPM

540@1934Reference

—

Capacities

Fuel

75.7 LReference

83.3 LReference

Dimensions

Wheelbase

200 cmReference

196 cmReference

Weight

2381 kgReference

1778 kgReference

Front tire

7.50x16Reference

Rear tire

14.9x24Reference

Industrial front

7.50x16Reference

11Lx16Reference

Industrial rear

14.9x24Reference

17.5Lx24Reference

Length

360 cmReference

660 cmReference

Width

193 cmReference

195 cmReference

Ground clearance

32 cmReference

35 cmReference

Front tread

132 to 203 cmReference

137 to 144 cmReference

Rear tread

152 to 165 cmReference

152 to 193 cmReference

Shipping

2381 kgReference

4989 kgReference

Max front axle

2799 kgReference

—

Max rear axle

4199 kgReference

—

Steering wheel

151 cmReference

—

Height (steering wheel)

—

177 cmReference

Height (exhaust)

—

233 cmReference

Electrical

Ground

negativeReference

—

Charging system

alternatorReference

—

Charging amps

45Reference

—

Battery CCA

605Reference

—

Battery volts

12Reference

—

J.I. Case 380B Height

ROPS

233 cmReference

—

Exhaust

256 cmReference

—

Speeds

J.I. Case 580B attachments

580B Serial Numbers

1971

—

8674001Reference

1972

—

8691901Reference

1973

—

8712001Reference

1974

—

8736601Reference

1975

—

8770001Reference

1976

—

8797501Reference

Attachment overview

J.I. Case 14.5 Backhoe

Backhoe type

—

J.I. Case 18.5 Extendahoe BackhoeReference

Digging depth

—

426 cmReference

Reach from pivot

—

534 cmReference

Loading height

—

330 cmReference

Bucket force

—

4263 kgReference

Dipperstick force

—

2747 kgReference

J.I. Case 18.5 Extendahoe Backhoe

Digging depth (retracted stick)

—

426 cmReference

Digging depth (extended stick)

—

548 cmReference

Reach from pivot (retracted stick)

—

542 cmReference

Reach from pivot (extended stick)

—

765 cmReference

Loading height (retracted stick)

—

388 cmReference

Loading height (extended stick)

—

450 cmReference

Bucket force (retracted stick)

—

4263 kgReference

Bucket force (extended stick)

—

4263 kgReference

Dipperstick force (retracted stick)

—

2652 kgReference

Dipperstick force (extended stick)

—

1963 kgReference

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.