International Harvester 674

The International Harvester 674 is a tractor produced by International Harvester. It is equipped with a 200.3 ci 3.3 L engine. The listed engine power is 61.56 hp 45.9 kW. Transmission: 8 forward and 4 reverse. Operating weight: 5,650 lbs 2562 kg.

Engine Power

61.56 hp 45.9 kW

Fuel & Capacities

Gasoline

Transmission

8 forward and 4 reverse

Operating Weight

5,650 lbs 2562 kg

Overview

	1973 - 1977 Utility tractor

Production
Manufacturer	International Harvester
Utility tractor
Factories	Doncaster, England
	Louisville, Kentucky, USA
Original price was $11,300 in 1978

International Harvester 674 Transmission
8-speed gear
Transmission details ...

International Harvester 674 Power
Drawbar (tested)	54.45 hp 40.6 kW
PTO (tested)	61.56 hp 45.9 kW
Performance test details ...

Mechanical
Two-wheel drive
Power steering
Hydraulic wet disc brakes
Open operator station. Four-post ROPS and cab available.

Hydraulics
Type	open center
Pump flow	13 gpm 49.2 lpm

Tractor hitch
Rear Type	II
Control	position and draft control
Rear lift	3969 lbs 1800 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	540 (1.375)

Dimensions & Tires
Wheelbase	84.5 inches 214 cm
Weight	5,650 lbs 2562 kg
Front tire	7.50-16
Rear tire	16.9-30
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References

International Tractor Range published in 1973, by International Harvester
Buyer's Guide published in 1976, by International Harvester
1978 Buyer's Guide published by International Harvester
464, 574 and and 674 Tractors published in 1973, by International Harvester
454, 474, 574 & 674 Tractors published in 1974, by International Harvester
Full Synchromesh and Hydrostatic Tractor Range published in 1963, by International Harvester
27PS-115PS published in 1975, by International Harvester
Farm Equipment Reference Catalog published in 1973, by International Harvester

Engine

Engine options
International Harvester 3.9L 4-cyl diesel
International Harvester 3.3L 4-cyl gasoline

Engine Detail — 239 ci / 3.9 L Diesel

Manufacturer	International Harvester D239
Fuel Type	Diesel
Configuration	4-cylinder, liquid-cooled
Displacement	239 ci 3.9 L
Bore/Stroke	3.875x5.06 inches 98 x 129 mm
Air cleaner	dual stage dry
Compression	16:1
Rated RPM	2400
Starter volts	12

Engine Detail — 200.3 ci / 3.3 L Gasoline

Manufacturer	International Harvester C200
Fuel Type	Gasoline
Configuration	4-cylinder, liquid-cooled
Displacement	200.3 ci 3.3 L
Bore/Stroke	3.8125x4.39 inches 97 x 112 mm
Air cleaner	dual stage dry
Compression	7.33:1
Rated RPM	2400
Starter volts	12

Transmission

Transmission — 8 forward and 4 reverse gear

Type	gear
Gears	8 forward and 4 reverse
Clutch	dry disc

Dimensions

International Harvester 674 Tires
Ag front	7.50-16
Ag rear	16.9-30

Dimensions
Wheelbase	84.5 inches 214 cm
Length	131 inches 332 cm
Width	70 inches 177 cm
Height (steering wheel)	62 inches 157 cm
Height (cab)	93 inches 236 cm
Operating weight	5,650 lbs 2562 kg
Ballasted weight	8,690 lbs 3941 kg
Clearance (rear axle)	23 inches 58 cm
Front tread	54 to 80 inches 137 to 203 cm
Rear tread	56 to 76 inches 142 to 193 cm

Tests

Tractor Tests
NTTL 1128: gasoline 8-speed 2WD
NTTL 1129: diesel 8-speed 2WD

Nebraska Tractor Test 1128
Gasoline 8-speed 2WD April 26 - May 17, 1973 Link: Nebraska Tractor Test 1128 file
PTO performance
Power at rated engine speed	58.53 hp 43.6 kW
Fuel use	5.7 gal/hour 21.6 l/hour
Power at rated PTO speed	56.01 hp 41.8 kW
Fuel use	5.2 gal/hour 19.7 l/hour
Drawbar performance
Max power	51.97 hp 38.8 kW
Fuel use	5.5 gal/hour 20.8 l/hour
Gear 3L used for power test.
Max pull	6,583 lbs 2986 kg
Gear 2L used for pull test.

Nebraska Tractor Test 1129
Diesel 8-speed 2WD April 28 - May 17, 1973 Link: Nebraska Tractor Test 1129 file
PTO performance
Power at rated engine speed	61.56 hp 45.9 kW
Fuel use	4.1 gal/hour 15.5 l/hour
Power at rated PTO speed	58.79 hp 43.8 kW
Fuel use	3.9 gal/hour 14.8 l/hour
Drawbar performance
Max power	54.45 hp 40.6 kW
Fuel use	4.0 gal/hour 15.1 l/hour
Gear 3L used for power test.
Max pull	6,833 lbs 3099 kg
Gear 2L used for pull test.

Photos

International Harvester 674

Recommended Implements & Sizing Guide

Engineering recommendations for International Harvester 674 based on its 61.56 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	3 to 4 Bottom (16")3 - 4 铧 (40 cm)	Heavy Duty	Suitable for medium loam and stubble turnover.
Rotary Cutter / MowerMowing & Clearing	6 ft (72 in)1.8 m	Medium Duty	Medium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep	66 to 72 in165 - 180 cm	Medium Duty	Standard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage	7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙	Medium Duty	Field leveling and clod breaking behind plows.
Hay BalerHay & Forage	4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机	Heavy Duty	Silage and dry hay; 540 RPM PTO with slip-clutch.

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 674.

Estimated Continuous Field Runtime: 1.2 hrs

Approximately 1.2 hours of continuous field operation at ~75% rated power on a full tank (4 gal / 15.1 L).

Estimated 75% Load Fuel Burn~3.2 gal/hr (12.1 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