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J.I. Case 641 vs J.I. Case LA
Verdict: J.I. Case 641 vs J.I. Case LA
The J.I. Case 641 and the J.I. Case LA are both tractors — here is how they stack up on the figures that matter. J.I. Case LA leads on rated power with 51 hp against 50 hp. J.I. Case LA holds more fuel (117.3 L vs 83.3 L) for longer stints between fills. J.I. Case 641 is the newer design (1960 vs 1940). In short: choose the J.I. Case LA for outright pulling power, or the J.I. Case 641 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
62
Fit score
Best match
Clear
J.I. Case
62
Fit score
Best match
Clear
Rated power
50 hp
51 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
J.I. CaseReference
J.I. CaseReference
Tractors equipped with the Case-o-Matic were sometimes referred to as the 630C.Reference
LP gas 4-speed 2WDAugust 21 - September 6, 1952Link: Nebraska Tractor Test 482 fileReference
Factories
Racine, Wisconsin, USAReference
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Steering
power assistReference
—
Total built
—
35,493Reference
Variants
630
diesel standardReference
—
631
diesel row-cropReference
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640
gas standardReference
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641
gas row-cropReference
—
LA
—
farmReference
LAI
—
industrialReference
Engine
Fuel tank
83.3 LReference
109.8 LReference
Belt (claimed)
38.8 kWReference
43.3 kWReference
Drawbar (tested)
32.3 kWReference
38.6 kWReference
Displacement
3.1 LReference
6.6 LReference
Bore/Stroke
97 x 105 mmReference
117 x 152 mmReference
Air cleaner
oil bathReference
oil bathReference
Compression
7.34:1Reference
7.58:1Reference
Rated RPM
2250Reference
1150Reference
Starter volts
12Reference
6Reference
Power at rated engine speed
37.7 kWReference
—
Max power
31.3 kWReference
38.6 kWReference
Aux. fuel
—
7.6 LReference
Drawbar (claimed)
—
38.0 kWReference
Plows
—
5Reference
Belt (tested)
—
44.4 kWReference
Firing order
—
1-3-2-4Reference
Oil capacity
—
14.2 LReference
Coolant capacity
—
57.7 LReference
Sparkplug gap
—
0.762 mmReference
Intake valve clearance
—
0.457 mmReference
Exhaust valve clearance
—
0.457 mmReference
Belt power (max)
—
44.4 kWReference
Transmission
Transmission
Case Dual-RangeReference
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Gears
4 forward and 1 reverseReference
4 forward and 1 reverseReference
Clutch
dry discReference
mechanical wet discReference
PTO & Hydraulics
PTO (tested)
37.7 kWReference
—
Type
gearReference
unsynchronized gearReference
Rear PTO
independent (Case-o-matic)Reference
—
Rear PTO Type
540/1000 (1.375)Reference
550Reference
Power at rated PTO speed
37.1 kWReference
—
Dimensions
Front tire
6.00x15Reference
7.50-18Reference
Rear tire
12.4x36Reference
15-30Reference
Ag front
6.50x16Reference
30x6 (steel)Reference
Ag rear
13.6x36Reference
48x12 (steel)Reference
Length
353 cmReference
355 cmReference
Height (hood)
161 cmReference
151 cmReference
Ground clearance
63 cmReference
—
Front tread
111 to 152 cmReference
—
Rear tread
132 to 223 cmReference
—
Wheelbase
—
208 cmReference
Weight
—
3408 kgReference
Operating weight
—
3408 kgReference
Ballasted weight
—
4926 kgReference
641 Serial Number Location
Capacities
Diameter
23 cmReference
33 cmReference
Width
205 cmReference
194 cmReference
RPM
—
814Reference
Speed
—
844.30 meters/minReference
Test results
Fuel use
15.1 l/hourReference
—
Max pull
3117 kgReference
3118 kgReference
Belt fuel use (max)
—
25.4 l/hourReference
LA Serial Number Location
LA Serial Numbers
1940
—
4400001Reference
1941
—
4500001Reference
1942
—
4600001Reference
1943
—
4700001Reference
1944
—
4800001Reference
1945
—
4900001Reference
1946
—
5000001Reference
1947
—
5100001Reference
1948
—
5200001Reference
1949
—
5300001Reference
1950
—
5400001Reference
1951
—
5500001Reference
1952
—
5600001Reference
1953
—
5700001Reference
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.


