International Harvester 7788

The International Harvester 7788 is a tractor produced by International Harvester. It is equipped with a 798 ci 13.1 L engine. The listed engine power is Diesel (listed): 330 hp / 246.1 kW. Transmission: 20 forward and 4 reverse. Operating weight: 21,550 lbs 9775 kg.

Engine Power

Diesel (listed): 330 hp / 246.1 kW

Fuel & Capacities

194 gal 734.3 L

Transmission

20 forward and 4 reverse

Operating Weight

21,550 lbs 9775 kg

Overview

	1982 - 1984 70 SeriesFour-wheel Drive (4WD) tractorSteiger built 70 Series Four-wheel Drive (4WD) tractor Steiger built

Production
Distributor	International Harvester
Manufacturer	Steiger
Four-wheel Drive (4WD) tractor
Built in Fargo, North Dakota, USA
Total built	2
Original price was $93,300 in 1984

International Harvester 7788 Engine
International Harvester 13.1L 8-cyl diesel
Fuel tank	194 gal 734.3 L
Engine details ...

International Harvester 7788 Transmission
20-speed
Transmission details ...

International Harvester 7788 Power
Engine	330 hp 246.1 kW
PTO (claimed)	265 hp 197.6 kW

Mechanical
Four-wheel drive
Cab standard with air-conditioning.

Hydraulics
Type	open center
Pump flow	19 gpm 71.9 lpm

Tractor hitch
Rear Type	III OptOptional

Dimensions & Tires
Wheelbase	118 inches 299 cm
Weight	21,550 lbs 9775 kg
Front tire	24.5-32
Rear tire	24.5-32
Full dimensions and tires ...

References

New International 4-Wheel Drive Tractors published in 1982, by International Harvester

Engine

Engine Detail — 798 ci / 13.1 L Diesel

Configuration	International Harvester DV-800, turbocharged diesel, 8-cylinder, liquid-cooled V8
Displacement	798 ci 13.1 L
Bore/Stroke	5.31x4.50 inches 135 x 114 mm
Power	330 hp 246.1 kW
Rated RPM	2400
Torque	725 lb-ft 983.1 Nm
Torque RPM	1800
Oil capacity	30 qts 28.4 L
Coolant capacity	69 qts 65.3 L

Transmission

Transmission — 20 forward and 4 reverse

Gears	20 forward and 4 reverse
With 24.5-32 tires.

Dimensions

International Harvester 7788 Tires
Ag front	24.5-32
Ag rear	24.5-32

Dimensions
Wheelbase	118 inches 299 cm
Length	246 inches 624 cm
Width	117 inches 297 cm
Weight	21,550 lbs 9775 kg
Ground clearance	15.6 inches 39 cm

International Harvester 7788 Height
Hood	94 inches 238 cm
Cab	134 inches 340 cm
Exhaust	147 inches 373 cm

Photos

International Harvester 7788

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 7788 based on its 330 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁	Commercial / Field Scale	High horsepower articulated/4WD field plowing.
Rotary Cutter / MowerMowing & Clearing	15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼	Commercial / Field Scale	Large commercial field and roadside mowing operations.
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	24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙	Commercial / Field Scale	Broad-acre grain tillage for high-drawbar tractors.
Hay BalerHay & Forage	Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m)	Commercial / Field Scale	High-capacity commercial forage harvesting (1000 RPM PTO).

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 International Harvester 7788.

Estimated Continuous Field Runtime: 11.3 hrs

Approximately 11.3 hours of continuous field operation at ~75% rated power on a full tank (194 gal / 734.4 L).

Estimated 75% Load Fuel Burn~17.2 gal/hr (65 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