Fiat 780
The Fiat 780 is a tractor produced by Fiat. It is equipped with a 223.7 ci 3.7 L engine. The listed engine power is Diesel (listed): 78 hp / 58.2 kW. Transmission: 16 forward and 4 reverse. Drive type: 4x2 2WD. Operating weight: 6482 to 7056 pounds.
Engine Power
Diesel (listed): 78 hp / 58.2 kW
Drive & Traction
4x2 2WD
Fuel & Capacities
21.1 gal
79.9 L
Transmission
16 forward and 4 reverse
Operating Weight
6482 to 7056 pounds
Overview
 | 1975 - 1984 |
|---|
Production | |
|---|---|
Manufacturer | Fiat |
Variants | |
|---|---|
780 | 2WD |
780DT | 4WD |
Fiat 780 Engine | |
|---|---|
Fiat 3.7L 4-cyl diesel | |
Fuel tank | 21.1 gal
79.9 L |
Engine details ...  | |
Fiat 780 Power | |
|---|---|
Engine | 78 hp
58.2 kW |
Mechanical | |
|---|---|
Drive | 4x2 2WD |
4x4 MFWD 4WD (780DT) | |
Final drives | planetary |
Steering | hydrostatic power |
Hydraulic wet disc brakes | |
Trailer brakes | hydraulic OptOptional |
Open operator station. Optional four-post ROPS. Optional cab with heater. | |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 6.82 gpm
25.8 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Control | position and draft control |
Rear lift | 5292 lbs
2400 kg |
Rear Arms | telecoping (optional) |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
540/1000 (1.375) | |
1000 (1.75) | |
Dimensions & Tires | |
|---|---|
2WD Wheelbase | 89 inches
226 cm |
4WD Wheelbase | 89.4 inches
227 cm |
Weight | 6482 to 7056 pounds |
Front tire | 7.50-18 |
Rear tire | 18.4x30 (2WD) |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Battery volts | 12 |
Battery AH | 120 |
References | |
|---|---|
 | |
780dt published in 1978, by Fiat |
Engine
Engine Detail — 223.7 ci / 3.7 L Diesel
Manufacturer | Fiat 8045 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 223.7 ci
3.7 L |
Bore/Stroke | 4.06x4.33 inches
103 x 110 mm |
Power | 78 hp
58.2 kW |
Fuel system | direct injection |
Compression | 17:1 |
Rated RPM | 2440 |
Operating RPM | 1000-2440 |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
8-speed | |
12-speed | |
16-speed |
Transmission — 8 forward and 2 reverse
Gears | 8 forward and 2 reverse |
Four gears in two ranges. | |
 | |
Transmission — 12 forward and 3 reverse
Gears | 12 forward and 3 reverse |
Four gears in three ranges. | |
 | |
Transmission — 16 forward and 4 reverse
Gears | 16 forward and 4 reverse |
Four gears in four ranges. | |
 | |
Dimensions
Fiat 780 Tires | |
|---|---|
Standard tires (ag) | Front: 7.50-18. Rear: 18.4x30 (2WD) |
Front: 11.2/10-28. Rear: 13.6/12-38 (4WD) | |
Dimensions | |
|---|---|
2WD Wheelbase | 89 inches
226 cm |
4WD Wheelbase | 89.4 inches
227 cm |
Length | 142.5 inches
361 cm |
Width | 73 inches
185 cm |
Height (steering wheel) | 70.9 inches
180 cm |
2WD Weight | 6482 lbs
2940 kg |
4WD Weight | 7056 lbs
3200 kg |
4WD Ground clearance | 18.1 inches
45 cm |
2WD Ground clearance | 20.1 inches
51 cm |
Front tread | 59.1/63/66.9/70.9/76.2 inches
150/160/169/180/193 cm (4WD) |
Rear tread | 55.1/59.1/63/66.9/70.9/74.8/78.7/82.7 inches
139/150/160/169/180/189/199/210 cm |
Photos
Fiat 780DT.
Recommended Implements & Sizing Guide
Engineering recommendations for Fiat 780 based on its 78 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 | 7 to 8 ft (84-96 in)2.1 - 2.4 m | Heavy Duty | Heavy-duty twin spindle cutter for overgrown acreage. |
Rotary TillerSeedbed Prep | 78 to 84 in200 - 215 cm | Heavy Duty | Heavy commercial tiller with multi-speed gearbox. |
Disc HarrowSecondary Tillage | 10 to 14 ft Tandem / Offset3.0 - 4.2 m 重型交错耙 | Heavy Duty | Aggressive residue cutting in corn/cotton stubble. |
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 Fiat 780.
Estimated Continuous Field Runtime: 5.2 hrs
Approximately 5.2 hours of continuous field operation at ~75% rated power on a full tank (21.1 gal / 79.9 L).
Estimated 75% Load Fuel Burn~4.1 gal/hr (15.4 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
Fiat 780 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Fiat 780.
Converted Equivalents:
Horsepower (HP)78 hp
Kilowatts (kW)58.2 kW
Metric Horsepower (PS / CV)79.1 PS
Direct Competitor Comparison
Compare Fiat 780 against same-era industry alternatives in the same horsepower class.
Current Model
Fiat
Fiat 780
Engine Power:Diesel (listed): 78 hp / 58.2 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 656
Engine Power:70.9
Production Years:1965 - 1973
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