Farmall 1256
The Farmall 1256 is a tractor produced by Farmall. It is equipped with a 406.9 ci 6.7 L engine. The listed engine power is 116.12 hp 86.6 kW. Transmission: Torque Amplifier. Operating weight: 9940 to 11030 pounds.
Engine Power
116.12 hp
86.6 kW
Fuel & Capacities
42 gal
159.0 L
Transmission
Torque Amplifier
Operating Weight
9940 to 11030 pounds
Overview
 | 1967 - 1969
56 SeriesStandard-tread tractor
56 Series
Standard-tread tractor |
|---|
Series map: 1456↑ 1969-19711256125.6hp*1206↓ 1965-1967*Estimated engine power for comparison only.
Note: the Farmall model 1256 is the same as the International Harvester 1256. The following data is from the 1256 listing. |
Production | |
|---|---|
Manufacturer | Farmall (a part of International Harvester) |
Standard-tread tractor | |
Built in Rock Island, Illinois, USA | |
Original price was $10,700 in 1969 | |
Farmall 1256 Engine | |
|---|---|
International Harvester 6.7L 6-cyl diesel | |
Fuel tank | 42 gal
159.0 L |
Engine details ...  | |
Farmall 1256 Power | |
|---|---|
PTO (claimed) | 113 hp
84.3 kW |
Drawbar (tested) | 102.03 hp
76.1 kW |
PTO (tested) | 116.12 hp
86.6 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Power steering | |
Independent hydraulic dry disc brakes | |
Open operator station. Two-post ROPS optional. Cab optional with heat and air-conditioning. |
Hydraulics | |
|---|---|
Type | open center |
Valves | 1 |
Pump flow | 8 gpm
30.3 lpm |
Tractor hitch | |
|---|---|
Rear Type | III/II |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 1000 |
Engine RPM | 1000@2100 |
Dimensions & Tires | |
|---|---|
Wheelbase | 105 inches (Farmall)
266 cm |
92 inches (International)
233 cm | |
Weight | 9940 to 11030 pounds |
Front tire | 10.00-16 |
Rear tire | 18.4-38 (Farmall) |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Charging system | alternator |
Charging amps | 55 |
Batteries | 2 |
Battery volts | 6 |
Battery AH | 204 |
References | |
|---|---|
 | |
Spring 1968 Buyer's Guide published by International Harvester | |
Summer-Fall 1968 Buyer's Guide published by International Harvester | |
World Wide Farm Equipment Buyer's Guide published in 1968, by International Harvester* | |
Spring 1969 Buyer's Guide published by International Harvester | |
1256 Turbo Tractors published by International Harvester | |
Farm Equipment Reference Catalog published in 1968, by International Harvester | |
*Publication contains known errors. |
Engine
Series map: 1456↑ 1969-19711256125.6hp*1206↓ 1965-1967*Estimated engine power for comparison only.
Note: the Farmall model 1256 is the same as the International Harvester 1256. The following data is from the 1256 listing. |
Engine Detail — 406.9 ci / 6.7 L Diesel
Manufacturer | International Harvester DT407 |
Configuration | turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 406.9 ci
6.7 L |
Bore/Stroke | 4.321x4.625 inches
110 x 117 mm |
Air cleaner | dual dry elements |
Compression | 17:1 |
Rated RPM | 2400 |
Starter volts | 12 |
Oil capacity | 15 qts
14.2 L |
Coolant capacity | 24 qts
22.7 L |
Transmission
Series map: 1456↑ 1969-19711256125.6hp*1206↓ 1965-1967*Estimated engine power for comparison only.
Note: the Farmall model 1256 is the same as the International Harvester 1256. The following data is from the 1256 listing. |
Transmission options | |
|---|---|
8-speed gear | |
16-speed partial power shift |
Transmission — 8 forward and 4 reverse gear
Type | gear |
Gears | 8 forward and 4 reverse |
Oil capacity | 68 qts
64.4 L |
The 1256's transmission provides four gears (1-4) in high, low, and reverse ranges. | |
With 18.4-38 rear tires. | |
 | |
Transmission — Torque Amplifier
Transmission | Torque Amplifier |
Type | partial power shift |
Gears | 16 forward and 8 reverse |
Oil capacity | 68 qts
64.4 L |
Four gears (1-4) in two ranges (low/high) plus reverse range. The Torque Amplifier (TA) allows a clutchless shift from direct drive (DD) to the lower TA speed in all gears and ranges. | |
With 18.4-38 rear tires. | |
 | |
Dimensions
Series map: 1456↑ 1969-19711256125.6hp*1206↓ 1965-1967*Estimated engine power for comparison only.
Note: the Farmall model 1256 is the same as the International Harvester 1256. The following data is from the 1256 listing. |
Farmall 1256 Tires | |
|---|---|
Standard tires (ag) | Front: 10.00-16. Rear: 18.4-38 (Farmall) |
Front: 11.00-16. Rear: 24.5-32 (International) | |
Dimensions | |
|---|---|
Wheelbase | 105 inches (Farmall)
266 cm |
92 inches (International)
233 cm | |
Length | 164 inches
416 cm |
Width | 92 inches
233 cm |
Height (steering wheel) | 86 inches
218 cm |
Farmall 1256 Weight | |
|---|---|
Shipping | 9940 lbs (Farmall)
4508 kg |
11030 lbs (International)
5003 kg | |
Operating | 10405 lbs
4719 kg |
Ballasted | 13810 lbs
6264 kg |
Tests
Series map: 1456↑ 1969-19711256125.6hp*1206↓ 1965-1967*Estimated engine power for comparison only.
Note: the Farmall model 1256 is the same as the International Harvester 1256. The following data is from the 1256 listing. |
Nebraska Tractor Test 971 | |
|---|---|
Diesel Torque Amplifier 2WD
April 15 - 30, 1968
Link: Nebraska Tractor Test 971 file | |
PTO performance | |
Power at rated engine speed | 116.12 hp
86.6 kW |
Fuel use | 7.5 gal/hour
28.4 l/hour |
Power at rated PTO speed | 113.33 hp
84.5 kW |
Fuel use | 6.8 gal/hour
25.7 l/hour |
Drawbar performance | |
Max power | 102.03 hp
76.1 kW |
Fuel use | 7.6 gal/hour
28.8 l/hour |
Gear 1H-TA used for power test. | |
Max pull | 11,104 lbs
5036 kg |
Gear 3L-TA used for pull test. | |
Photos
Farmall 1256, left side.
Farmall 1256, right side.
Farmall 1256, rear view.
View of the operator station on the Farmall 1256.
Recommended Implements & Sizing Guide
Engineering recommendations for Farmall 1256 based on its 116.12 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 4 to 5 Bottom (16-18")4 - 5 铧 (40-45 cm) | Heavy Duty | Heavy primary tillage; semi-mounted hitch recommended. |
Rotary Cutter / MowerMowing & Clearing | 10 to 12 ft Flex-Wing3.0 - 3.6 m 折叠双翼 | Heavy Duty | Wide swath pasture and crop residue shredding. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
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 | 5x6 Round Baler or 3x3 Mid Square1.5x1.8 m 大圆捆或中型方捆机 | Heavy Duty | High density baling; requires minimum 85 PTO HP. |
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 Farmall 1256.
Estimated Continuous Field Runtime: 7 hrs
Approximately 7 hours of continuous field operation at ~75% rated power on a full tank (42 gal / 159 L).
Estimated 75% Load Fuel Burn~6 gal/hr (22.9 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
Farmall 1256 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Farmall 1256.
Converted Equivalents:
Horsepower (HP)116.1 hp
Kilowatts (kW)86.6 kW
Metric Horsepower (PS / CV)117.7 PS
Direct Competitor Comparison
Compare Farmall 1256 against same-era industry alternatives in the same horsepower class.
Current Model
Farmall
Farmall 1256
Engine Power:116.12 hp
86.6 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 1056
Engine Power:105
Production Years:1982 - 1985
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