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J.I. Case 780 Construction King vs J.I. Case 780B Construction King
Verdict: J.I. Case 780 Construction King vs J.I. Case 780B Construction King
The J.I. Case 780 Construction King and the J.I. Case 780B Construction King are both backhoe loaders — here is how they stack up on the figures that matter. Both are rated at the same 120 hp. J.I. Case 780 Construction King is the lighter machine (21,000 kg vs 21,083 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. J.I. Case 780B Construction King is the newer design (1981 vs 1971). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
J.I. Case
85
Fit score
Best match
Clear
J.I. Case
85
Fit score
Best match
Clear
Rated power
120 hp
120 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
J.I. CaseReference
J.I. CaseReference
With 18.4x24 rear tires.Reference
With 18.4x24 rear tires.Reference
Final drives
outboard planetaryReference
outboard planetaryReference
Engine
Engine (gross)
89.5 kWReference
89.5 kWReference
Engine (net)
82.8 kWReference
82.8 kWReference
Displacement
5.5 LReference
5.5 LReference
Bore/Stroke
117 x 127 mmReference
117 x 127 mmReference
Power (net)
82.8 kWReference
82.8 kWReference
Power (gross)
89.5 kWReference
89.5 kWReference
Fuel system
direct injectionReference
direct injevtionReference
Air cleaner
dryReference
dryReference
Compression
16.5:1Reference
15.8:1Reference
Rated RPM
2200Reference
2200Reference
Torque
446.1 NmReference
451.5 NmReference
Torque RPM
1500Reference
1500Reference
Starter
electricReference
electricReference
Starter volts
24Reference
24Reference
Oil capacity
18.9 LReference
11.4 LReference
Coolant capacity
24.6 LReference
34.1 LReference
Transmission
Type
power shiftReference
power shiftReference
Gears
2 forward and reverseReference
3 forward and reverseReference
Capacities
Fuel
132.5 LReference
124.9 LReference
PTO & Hydraulics
Hydraulic system
174.1 LReference
71.5 LReference
Capacity
174.1 LReference
71.5 LReference
Pump flow
87.1 lpmReference
98.4 lpmReference
Total flow
219.5 lpmReference
210.1 lpmReference
Dimensions
Wheelbase
220 cmReference
220 cmReference
Weight
21000 to 23200 poundsReference
10391 kgReference
Front tire
9.00x20Reference
14x17.5Reference
Rear tire
18.4x24Reference
18.4x24Reference
Industrial front
14.00x17.5Reference
14x17.5Reference
Industrial rear
18.4x28Reference
18.4x24Reference
Length
754 cmReference
762 cmReference
Width
236 cmReference
251 cmReference
Height (steering wheel)
218 cmReference
—
Height (cab)
297 cmReference
—
Height (backhoe)
403 cmReference
—
Clearance (rear axle)
39 cmReference
—
Front tread
198 cmReference
198 cmReference
Rear tread
189 cmReference
180 cmReference
Shipping
10523 kgReference
—
Max front axle
7711 kgReference
—
Steering wheel
—
215 cmReference
Backhoe & Loader
Dig depth
558 cmReference
—
Dump angle
132 cmReference
124 cmReference
Electrical
Charging system
alternatorReference
alternatorReference
Charging amps
35Reference
40Reference
Batteries
2Reference
2Reference
Battery volts
12Reference
12Reference
Battery AH
95Reference
—
Ground
—
negativeReference
Battery CCA
—
600Reference
Attachment overview
J.I. Case 18-foot Backhoe
Backhoe type
J.I. Case Extendahoe BackhoeReference
J.I. Case Extendahoe BackhoeReference
Transport height
406 cmReference
398 cmReference
Digging depth
558 cmReference
—
2-Foot flat digging depth
553 cmReference
556 cmReference
Reach from pivot
687 cmReference
668 cmReference
Loading height
387 cmReference
345 cmReference
Bucket Rotation
156°Reference
151°Reference
Swing Arc
180°Reference
180°Reference
Bucket force
6047 kgReference
6187 kgReference
Dipperstick force
4915 kgReference
4975 kgReference
J.I. Case Extendahoe Backhoe
Digging depth (retracted stick)
548 cmReference
556 cmReference
Digging depth (extended stick)
670 cmReference
670 cmReference
Reach from pivot (retracted stick)
688 cmReference
665 cmReference
Reach from pivot (extended stick)
805 cmReference
777 cmReference
Bucket force (retracted stick)
6100 kgReference
6233 kgReference
Bucket force (extended stick)
6100 kgReference
6233 kgReference
Dipperstick force (retracted stick)
4839 kgReference
5032 kgReference
Dipperstick force (extended stick)
3625 kgReference
3691 kgReference
Loading height (retracted stick)
—
378 cmReference
Loading height (extended stick)
—
441 cmReference
Speeds
J.I. Case Backhoe
J.I. Case 780B Height
Cab
—
292 cmReference
Exhaust
—
322 cmReference
Backhoe
—
401 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.