Trac-Loc Rear Dana 44 Differential for Case 3.07 to 3.54 Ratio Casting Services Product

For off-road enthusiasts and restoration specialists working with Dana 44 rear axles, the differential case is the heart of power transfer and traction management. Our specialized casting service produces premium Trac-Loc Rear Differential Cases specifically engineered for gear ratios from 3.07 to 3.54, delivering OEM-quality fitment, superior strength, and reliable limited-slip performance for 4x4 vehicles and performance applications.

High-Strength Material Construction
We manufacture these differential cases using high-grade ductile iron (GGG40/50) or 4140 alloy steel, materials chosen for their exceptional durability under torque stress. The ductile iron provides excellent yield strength (minimum 40,000 psi) and impact resistance through its nodular graphite structure, while the alloy steel variant offers even higher tensile strength for extreme-duty applications. Both materials maintain dimensional stability under thermal cycling and resist wear from constant gear contact, ensuring precise tooth engagement and long-term reliability.

Precision-Controlled Production Process
Our manufacturing process begins with advanced sand casting using resin-bonded molds to achieve exact dimensional replication of the original Dana 44 case geometry. Each casting undergoes normalizing heat treatment to relieve internal stresses and create a uniform microstructure. Critical machining operations include CNC boring of the carrier bearing journals to maintain precise gear alignment, milling of the ring gear mounting surface to ensure perfect flange runout, and drilling of bolt holes to exact positional tolerances. The final step involves dynamic balancing to minimize vibrations at high rotational speeds.

Optimized Performance Characteristics
This Trac-Loc differential case delivers:

• Compatible with 3.07 to 3.54 ratio ring and pinion sets

• Maintains proper gear backlash and pinion depth settings

• Supports Trac-Loc clutch pack assembly for controlled slip operation

• Withstands torque loads exceeding 4,000 lb-ft

• Provides oil passageways for proper clutch lubrication

• Ensures correct preload for carrier bearings

Direct Application for Dana 44 Axles
This product serves as a direct replacement for worn or damaged original differential cases in Dana 44 rear axles found in Jeep Wranglers, Cherokees, and various Ford and Dodge trucks. Proper case dimensions are critical for maintaining gear alignment, which directly affects noise levels, power transfer efficiency, and component longevity. Our casting ensures the ring gear maintains perfect mesh with the pinion, preventing premature wear and potential failure under load.

Choose our casting services for your Dana 44 Trac-Loc differential to restore optimal performance and durability to your 4x4 drivetrain. We deliver the precision, material quality, and technical expertise necessary for reliable operation in both on-road and off-road conditions.