Farmall 1256

The Farmall 1256 is a tractor produced by Farmall. It is equipped with a 406.9 ci 6.7 L engine. The rated power output is 116.12 hp 86.6 kW. Transmission: Torque Amplifier. Operating weight: 9940 to 11030 pounds.

Overview

	1967 - 1969 56 SeriesStandard-tread tractor
1967 - 1969
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.