EAGLE SPCLTY Eagle Specialty Products 103503750 3.75″ Cast Steel Crankshaft for Small Block Chevy

Description

Product Overview

The Eagle 3.75 inch cast steel crankshaft is a precision‑engineered component designed specifically for Small Block Chevrolet engines. Manufactured by Eagle Specialty Products, this crankshaft carries the OEM part number 103503750 and serves as a direct replacement for the factory‑installed unit. Constructed from high‑grade cast steel, the shaft offers exceptional strength, rigidity, and resistance to fatigue, ensuring reliable performance under demanding conditions. At 51.2 pounds, the crankshaft provides the mass needed for optimal engine balance while maintaining manageable installation weight. The exterior is fully machined to exacting tolerances, guaranteeing a seamless fit with existing bearings, connecting rods, and oil pump assemblies. This product is vehicle‑specific, meaning it has been tested and verified for compatibility with a wide range of Small Block Chevy applications, from classic restorations to modern performance builds.

Usage

Designed for both street and track environments, the Eagle crankshaft excels in scenarios where engine durability and smooth power delivery are paramount. Whether you are rebuilding a classic Chevrolet hot rod, upgrading a daily driver for increased horsepower, or assembling a race‑ready engine, this crankshaft delivers the reliability required for high‑rpm operation. Its robust construction makes it suitable for naturally aspirated builds as well as forced‑induction applications, handling the additional stresses of turbocharging or supercharging with confidence. The component’s weight and balance characteristics contribute to reduced vibration, enhancing driver comfort and extending the life of ancillary engine parts. Installation is straightforward for experienced mechanics, and the crankshaft’s compatibility with standard Small Block Chevy bearing kits simplifies the rebuild process.

Why Choose Us

Choosing the Eagle 3.75 inch cast steel crankshaft means selecting a product backed by decades of engineering expertise and a reputation for quality within the performance automotive community. Eagle Specialty Products adheres to rigorous manufacturing standards, employing state‑of‑the‑art casting techniques and precision machining to achieve tight dimensional tolerances. Each crankshaft undergoes thorough inspection and testing to verify balance, hardness, and surface finish, ensuring that you receive a component that meets or exceeds OEM specifications. The company’s commitment to customer satisfaction includes responsive technical support, detailed installation guidance, and a warranty that protects against manufacturing defects. By investing in this crankshaft, you gain confidence that your engine rebuild will benefit from a component designed for longevity, performance, and ease of service.

Key Features

• High‑grade cast steel provides superior strength and fatigue resistance for demanding engine applications.
• Exact OEM fit ensures seamless integration with existing Small Block Chevy engine components.
• Precision‑machined surfaces reduce friction and promote smoother operation at high RPMs.
• Optimized weight and balance improve engine smoothness and reduce vibration for a refined driving experience.
• Comprehensive technical support and warranty give peace of mind and assistance throughout the installation process.

FAQ

Is this crankshaft compatible with all Small Block Chevy engines?

Yes, the Eagle 103503750 crankshaft is designed to fit the full range of Small Block Chevrolet engines that use the OEM part number 103503750. It works with both classic and modern variants, provided the engine block matches the specified dimensions.

Do I need to replace the bearings when installing this crankshaft?

While the crankshaft can be installed with existing bearings if they are in good condition, it is recommended to replace the main and rod bearings with a new set to ensure optimal performance and longevity, especially in high‑performance builds.

What is the recommended break‑in procedure for this crankshaft?

After installation, run the engine at moderate RPMs for the first 30‑45 minutes to allow the oil to fully circulate and the components to settle. Follow this with a series of varied RPM loads to promote even wear across the bearing surfaces.

Can this crankshaft be used in forced‑induction applications?

Absolutely. The cast steel construction and robust design make it suitable for turbocharged or supercharged setups, provided the rest of the engine is built to handle the increased pressures and temperatures.

What warranty does Eagle provide for this crankshaft?

Eagle Specialty Products offers a limited warranty against manufacturing defects, covering material and workmanship issues for a period of one year from the date of purchase. Contact their support team for claim assistance.