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Years in Production / 1967–1969

International Harvester

1256

Explore the specifications, hardware, and original references for the International Harvester 1256.

Generic tractor; no model photo available
No photo

125hp

Engine estimate · from PTO

MFWD Optional

Drive

1967–1969

Production years

International Harvester

Manufacturer

1256 / 01

At a glance

Overview

1967 - 1969

Standard-tread tractor

Production

Standard-tread tractor

Built in Rock Island, Illinois, USA

Original price was $10,700 in 1969

Manufacturer
International Harvester

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 gpm30.3 lpm

Hitch

Rear Type
III/II

Pto

Rear Pto
independent
Rear Type
1000
Engine Rpm
1000@2100

Electrical

Charging System
alternator
Charging Amps
55
Batteries
2
Battery Volts
6
Battery Ah
204

1256 / 02

Under the hood

Engine Detail

International Harvester DT407

turbocharged diesel

6-cylinder

liquid-cooled

Displacement
406.9 ci6.7 L
Bore Stroke
4.321x4.625 inches110 x 117 mm
Air Cleaner
dual dry elements
Compression Ratio
17:1
Rated Rpm
2400
Starter Volts
12
Oil Capacity
15 qts14.2 L
Coolant Capacity
24 qts22.7 L
Cylinders
6
Cooling
liquid-cooled

Engine Options

International Harvester 6.7L 6-cyl diesel

Fuel Tank
42 gal159.0 L

1256 / 03

Gears & controls

Transmission (Option 1)

The 1256's transmission provides four gears (1-4) in high, low, and reverse ranges.

Transmission Type
gear
Gears
8 forward and 4 reverse
Oil Capacity
68 qts64.4 L
Speeds Description
With 18.4-38 rear tires.

Transmission (Option 2)

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.

Transmission
Torque Amplifier
Transmission Type
partial power shift
Gears
16 forward and 8 reverse
Oil Capacity
68 qts64.4 L
Speeds Description
With 18.4-38 rear tires.

Transmission Options

8-speed gear

16-speed partial power shift

1256 / 04

Size. Stance. Footprint.

Dimensions

Length
164 in416 cm
Width
92 in233 cm
Height
86 in218 cm
Wheelbase
105 in266 cm

Dimensions And Tires

Wheelbase
105 inches (Farmall)266 cm
Wheelbase
92 inches (International)233 cm
Weight
9940 to 11030 pounds
Front Tire
10.00-16
Rear Tire
18.4-38 (Farmall)

Tires And Tracks

Standard Tires Ag
Front: 10.00-16. Rear: 18.4-38 (Farmall)
Standard Tires Ag
Front: 11.00-16. Rear: 24.5-32 (International)

See it in action

Videos

Watch International Harvester 1256 videos from their original YouTube creators.

Rare 1969 IH Front Wheel Assist Wheatland 1256 - Classic Tractors Tv

Video by Classic Tractor Fever

Watch on YouTube ↗

1256 / 06

Tests (NTTL)

Nebraska Tractor Test 971

Diesel Torque Amplifier 2WDApril 15 - 30, 1968

PTO performance

Drawbar performance

Gear 1H-TA used for power test.

Gear 3L-TA used for pull test.

Id
971
Power At Rated Engine Speed
116.12 hp86.6 kW
Fuel Use
7.5 gal/hour28.4 l/hour
Fuel Use
6.8 gal/hour25.7 l/hour
Fuel Use
7.6 gal/hour28.8 l/hour
Power At Rated Pto Speed
113.33 hp84.5 kW
Max Power
102.03 hp76.1 kW
Max Pull
11,104 lbs5036 kg