International Harvester 4.8L 6-cyl gasolineGasoline · 6 cyl
291 ci
International Harvester 5.9L 6-cyl dieselDiesel · 6 cyl
360 ci
Engine details
International Harvester 4.8L 6-cyl gasoline
Bore × stroke
3.75 in × 4.39 in
Rated speed
2,400 rpm
Cooling
liquid-cooled
International Harvester 5.9L 6-cyl diesel
Bore × stroke
3.88 in × 5.06 in
Rated speed
2,400 rpm
Compression
17:1
Cooling
liquid-cooled
Transmissions
Transmissions for the International Harvester 766
8-speed geargear
8F / 4R
Torque Amplifiertwo-speed power shift
16F / 8R
Transmission notes
8-speed gear: Four gears (1-4) in low and high ranges.
Torque Amplifier: Four gears (1-4) in two ranges (low/high) with the Torque Amplifer (TA) power shift. The TA allows a shift-on-the-move between direct drive and a lower speed.
Weight
Weight specifications
Weight
10,300 lb operating
Ballasted
11,880 lb
Dimensions
Dimensions specifications
Wheelbase
105 in
Length
165 in
Width
98 in
Front tread, narrowest
60 in
Front tread, widest
84 in
Rear tread, narrowest
56 in
Rear tread, widest
100 in
Capacities
Capacities specifications
Fuel tank
37 gal
Hydraulics
Hydraulics specifications
System
open center
Pump flow
12 gpm
Hitch
Hitch specifications
Rear hitch category
2
Rear lift capacity
no record
PTO
PTO specifications
Rear PTO
independent
Rear PTO speeds
540/1000
Chassis
Chassis specifications
Drive
2WD
Steering
Power steering
Brakes
Hydraulic dry disc brakes
Cab
Open operator station. Cab optional
Tires
Tires specifications
Front
9.5L-15
Rear
18.4-34
Production
Production specifications
Total built
10,799
Price new
$13,400 (1976)
Factories
Rock Island, Illinois, USA
Built by
International Harvester
Serial numbers
Left side of clutch housing
First serial number by year
Year
First serial
1971
7101
1972
7416
1973
9611
1974
12378
1975
14630
1976
16840
Literature
766, 966, 1066 and 1466 Tractors International Harvester, 1972
766, 966, 1066 and 1466 Tractors International Harvester, 1973