J.I. Case 770
The J.I. Case 770 is a tractor produced by J I Case. It is equipped with a 251 ci 4.1 L engine. The listed engine power is 64.56 hp 48.1 kW. Transmission: Range Power Shift. Operating weight: 9,220 lbs 4182 kg.
Engine Power
64.56 hp
48.1 kW
Fuel & Capacities
Gasoline
Transmission
Range Power Shift
Operating Weight
9,220 lbs
4182 kg
Overview
 | 1969 - 1972 |
|---|
Production | |
|---|---|
Manufacturer | J.I. Case |
Built in Racine, Wisconsin, USA | |
Total built | 1,690 |
Original price was $7,600 in 1973 | |
J.I. Case 770 Power | |
|---|---|
Drawbar (claimed) | 49 hp
36.5 kW |
PTO (claimed) | 56 hp
41.8 kW |
Drawbar (tested) | 56.85 hp
42.4 kW |
PTO (tested) | 64.56 hp
48.1 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Power steering | |
Differential hydraulic dry disc brakes | |
Open operator station. Cab optional. |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 16 gpm
60.6 lpm |
Total flow | 24 gpm
90.8 lpm |
Steering flow | 8 gpm
30.3 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
540/1000 (1.375) | |
Engine RPM | 540@1900 |
1000@1900 | |
Dimensions & Tires | |
|---|---|
Wide-front Wheelbase | 101 inches
256 cm |
Tricycle Wheelbase | 94 inches
238 cm |
Weight | 9,220 lbs
4182 kg |
Front tire | 7.5L-15 |
Rear tire | 16.9-34 |
Full dimensions and tires ...  | |
References | |
|---|---|
 | |
Jet-Age 770-890-970-1070 Tractors published in 1970, by J.I. Case | |
Agri King Tractor published in 1969, by J.I. Case | |
Buyers Guide for '70 published in 1970, by J.I. Case |
Engine
Engine options | |
|---|---|
J.I. Case 4.4L 4-cyl diesel | |
J.I. Case 4.1L 4-cyl gasoline |
Engine Detail — 267 ci / 4.4 L Diesel
Manufacturer | J.I. Case |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Engine RPMs increased from 1900 to 2000 starting at serial number 8675001, creating an increase of about 8 horsepower. | |
Displacement | 267 ci
4.4 L |
Bore/Stroke | 4.125x5.00 inches
105 x 127 mm |
Air cleaner | paper element with pre-cleaner |
Compression | 16.5:1 |
Rated RPM | 1900 (early) |
2000 (late) | |
Starter volts | 12 |
Engine Detail — 251 ci / 4.1 L Gasoline
Manufacturer | J.I. Case |
Fuel Type | Gasoline |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 251 ci
4.1 L |
Bore/Stroke | 4.00x5.00 inches
102 x 127 mm |
Air cleaner | paper element with precleaner |
Compression | 7.5:1 |
Rated RPM | 1900 |
Starter volts | 12 |
Coolant capacity | 28 qts
26.5 L |
Transmission
Transmission options | |
|---|---|
8-speed unsynchronized gear | |
12-speed partial power shift |
Transmission — 8 forward and 2 reverse unsynchronized gear
Type | unsynchronized gear |
Gears | 8 forward and 2 reverse |
Clutch | 304.8mm dry disc |
 | |
Transmission — Range Power Shift
Transmission | Range Power Shift |
Type | partial power shift |
Gears | 12 forward and 4 reverse |
Clutch | hydraulic wet discs |
Four gears each with reverse and a three-speed forward powershift. | |
 | |
Dimensions
J.I. Case 770 Tires | |
|---|---|
Ag front | 7.5L-15 |
Ag rear | 16.9-34 |
Dimensions | |
|---|---|
Wide-front Wheelbase | 101 inches
256 cm |
Tricycle Wheelbase | 94 inches
238 cm |
Length | 153 inches
388 cm |
Height (hood) | 67 inches
170 cm |
Operating weight | 9,220 lbs
4182 kg |
Ballasted weight | 10,950 lbs
4966 kg |
Ground clearance | 15 inches
38 cm |
Front tread | 60 to 88 inches
152 to 223 cm |
Rear tread | 60 to 88 inches
152 to 223 cm |
Tests
Tractor Tests | |
|---|---|
NTTL 1032: gasoline 12-speed 2WD | |
NTTL 1033: diesel 8-speed 2WD | |
NTTL 1058: diesel 12-speed 2WD | |
NTTL 1061: gasoline 8-speed 2WD | |
NTTL 1088: diesel 8-speed 2WD | |
NTTL 1089: diesel 12-speed 2WD |
Nebraska Tractor Test 1032 | |
|---|---|
Gasoline 12-speed 2WD
November 10 - 22, 1969
Link: Nebraska Tractor Test 1032 file | |
PTO performance | |
Power at rated engine speed | 53.53 hp
39.9 kW |
Fuel use | 5.0 gal/hour
18.9 l/hour |
Drawbar performance | |
Max power | 46.30 hp
34.5 kW |
Fuel use | 5.2 gal/hour
19.7 l/hour |
Gear 2-High used for power test. | |
Max pull | 7,103 lbs
3221 kg |
Gear 2-Low used for pull test. | |
Nebraska Tractor Test 1033 | |
|---|---|
Diesel 8-speed 2WD
November 11 - 22, 1969
Link: Nebraska Tractor Test 1033 file | |
PTO performance | |
Power at rated engine speed | 56.36 hp
42.0 kW |
Fuel use | 3.6 gal/hour
13.6 l/hour |
Drawbar performance | |
Max power | 49.18 hp
36.7 kW |
Fuel use | 3.7 gal/hour
14.0 l/hour |
Gear 4-Low used for power test. | |
Max pull | 7,623 lbs
3457 kg |
Gear 2-Low used for pull test. | |
Nebraska Tractor Test 1058 | |
|---|---|
Diesel 12-speed 2WD
October 28 - November 7, 1970
Link: Nebraska Tractor Test 1058 file | |
PTO performance | |
Power at rated engine speed | 56.77 hp
42.3 kW |
Fuel use | 3.8 gal/hour
14.4 l/hour |
Drawbar performance | |
Max power | 50.36 hp
37.6 kW |
Fuel use | 3.7 gal/hour
14.0 l/hour |
Gear 2-High used for power test. | |
Max pull | 7,627 lbs
3459 kg |
Gear 1-Med used for pull test. | |
Nebraska Tractor Test 1061 | |
|---|---|
Gasoline 8-speed 2WD
November 6 - 19, 1970
Link: Nebraska Tractor Test 1061 file | |
PTO performance | |
Power at rated engine speed | 56.32 hp
42.0 kW |
Fuel use | 5.0 gal/hour
18.9 l/hour |
Drawbar performance | |
Max power | 49.14 hp
36.6 kW |
Fuel use | 5.0 gal/hour
18.9 l/hour |
Gear 4-Low used for power test. | |
Max pull | 7,474 lbs
3390 kg |
Gear 2-Low used for pull test. | |
Nebraska Tractor Test 1088 | |
|---|---|
Diesel 8-speed 2WD
November 13 - 23, 1971
Link: Nebraska Tractor Test 1088 file | |
PTO performance | |
Power at rated engine speed | 63.90 hp
47.7 kW |
Fuel use | 4.3 gal/hour
16.3 l/hour |
Power at rated PTO speed | 62.85 hp
46.9 kW |
Fuel use | 4.1 gal/hour
15.5 l/hour |
Drawbar performance | |
Max power | 56.85 hp
42.4 kW |
Fuel use | 4.3 gal/hour
16.3 l/hour |
Gear 4-Low used for power test. | |
Max pull | 8,853 lbs
4015 kg |
Gear 1-Low used for pull test. | |
Nebraska Tractor Test 1089 | |
|---|---|
Diesel 12-speed 2WD
November 15 - 24, 1971
Link: Nebraska Tractor Test 1089 file | |
PTO performance | |
Power at rated engine speed | 64.56 hp
48.1 kW |
Fuel use | 4.4 gal/hour
16.7 l/hour |
Power at rated PTO speed | 61.93 hp
46.2 kW |
Fuel use | 4.2 gal/hour
15.9 l/hour |
Drawbar performance | |
Max power | 55.95 hp
41.7 kW |
Fuel use | 4.4 gal/hour
16.7 l/hour |
Gear 3-Low used for power test. | |
Max pull | 8,927 lbs
4049 kg |
Gear 1-Med used for pull test. | |
Recommended Implements & Sizing Guide
Engineering recommendations for J I Case J.I. Case 770 based on its 64.56 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for J I Case J.I. Case 770.
Estimated Continuous Field Runtime: 1.3 hrs
Approximately 1.3 hours of continuous field operation at ~75% rated power on a full tank (4.4 gal / 16.7 L).
Estimated 75% Load Fuel Burn~3.4 gal/hr (12.7 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
J I Case J.I. Case 770 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for J I Case J.I. Case 770.
Converted Equivalents:
Horsepower (HP)64.6 hp
Kilowatts (kW)48.1 kW
Metric Horsepower (PS / CV)65.5 PS
Direct Competitor Comparison
Compare J.I. Case 770 against same-era industry alternatives in the same horsepower class.
Current Model
J I Case
J.I. Case 770
Engine Power:64.56 hp
48.1 kW
★ Baseline Reference
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