The International Harvester 574, a workhorse of the agricultural world from 1970 to 1978, remains a popular and sought-after classic tractor. However, obtaining accurate specifications can prove surprisingly challenging due to inconsistencies across various sources. For more tractor specifications, check out this helpful resource: Case Tractor Specs. This comprehensive guide aims to clarify those discrepancies, providing a detailed analysis of the 574's specifications and offering actionable advice for owners, restorers, and researchers.
Engine Specifications: Powering the Farm
The International 574 was available with two distinct engine options: the gasoline-powered C200 and the diesel-powered D239. Both engines offered robust performance, but their power outputs and characteristics varied. It's important to understand the distinction between gross and net horsepower; gross horsepower reflects the engine's power output without considering the power absorbed by accessories, while net horsepower accounts for these losses.
The 3.3-liter C200 gasoline engine typically produced around 68 horsepower (50.7 kW) gross and approximately 64.7 hp (48.2 kW) net. The 3.9-liter D239 diesel engine offered more power, but discrepancies in reported values necessitate careful cross-referencing. This variance is not uncommon in older machinery. Why the inconsistency? Different testing methodologies, engine wear, and even the reporting practices of the era all play a role.
| Engine Type | Displacement (Liters) | Gross Power (hp/kW) | Net Power (hp/kW) | Notes |
|---|---|---|---|---|
| Gasoline (C200) | 3.3 | ~68 / 50.7 | ~64.7 / 48.2 | Net power often lower than gross due to accessory load |
| Diesel (D239) | 3.9 | Varies widely | Varies widely | Significant discrepancies exist across sources. |
Transmission Specifications: Shifting Gears Through Time
The International 574 offered three distinct transmission options: an 8-speed partially synchronized transmission, a hydrostatic transmission known for its infinitely variable speeds, and a more advanced 16-speed two-speed power shift transmission. Precise gear ratios remain elusive due to inconsistent documentation, underscoring the challenges of researching vintage tractor specifications.
| Transmission Type | Forward Speeds | Reverse Speeds | Gear Ratios | Speed Range (mph) | Notes |
|---|---|---|---|---|---|
| 8-Speed Partially Synchronized | 8 | 2 | Varies by source | Typically 0-12 | Data inconsistencies among sources are common. |
| Hydrostatic | Variable | Variable | N/A | Varies | Limited data available. |
| 16-Speed Two-Speed Power Shift | 16 | 4-6 | Varies by source | Typically 0-15 | Reported speeds vary across different resources. |
Hydraulic System Specifications: Lifting Capacity and Power
The hydraulic system's capabilities are crucial for the 574's operational performance. The system operated at a pressure of approximately 2500 psi (172.4 bar), with a pump flow rate of roughly 11.9 gallons per minute (45 liters per minute). However, the rear lift capacity varies considerably across data sources, highlighting the need for caution when considering reported values. This inconsistency could be due to factors like testing methodology, the condition of the hydraulic system, and variations across different model years.
| Specification | Value (Approximate) | Notes |
|---|---|---|
| Hydraulic Pressure | 2500 psi (172.4 bar) | Minor variations exist among sources. |
| Hydraulic Flow Rate | 11.9 gpm (45 lpm) | Some sources report slightly different figures. |
| Rear Lift Capacity | Varies widely | Significant discrepancies exist due to inconsistent reporting. |
Other Key Specifications: A Comprehensive Overview
Beyond the core components, other essential specifications influence the 574’s overall capabilities. These include dimensions (length, width, height), overall weight, PTO (Power Take-Off) horsepower, fuel tank capacity, and other unique features. As with other aspects, discrepancies exist across different sources for these values.
Data Standardization Challenges: The Importance of Cross-Referencing
The inconsistencies encountered in gathering International 574 specifications emphasize the crucial need for researchers and enthusiasts to cross-reference information from numerous reliable sources. The lack of standardized reporting practices during the tractor's production era contributes significantly to the challenges in attaining consistent data.
Actionable Advice for Owners, Restorers, and Researchers
For Owners: Regular maintenance, proactive part sourcing from multiple suppliers, and engaging with online communities dedicated to classic tractors are essential.
For Restorers: Meticulous record-keeping during the restoration process is vital. Documenting every step and maintaining an accurate parts inventory will assist greatly in a successful outcome.
For Researchers: Cross-referencing data from multiple reputable sources, consulting original documentation whenever possible, and using a critical eye when evaluating information are all key elements in the search for accurate specifications. Original sales brochures and service manuals can prove invaluable.
Conclusion: A Legacy of Hard Work and Varied Data
The International Harvester 574's enduring legacy in agriculture is undeniable. While its operational prowess is well-established, the quest for precise and consistent specifications continues. By acknowledging the challenges of data inconsistency and employing diligent research practices, enthusiasts can attain a clearer and more accurate understanding of this iconic machine. This article serves as a starting point for that process; persistent investigation across multiple reputable sources will always be needed to gather a complete picture.