Specifications
- Brand
- Eagle
- Part #
- 138113898
- UPC
- 793348045016

Eagle Chevy 4.8/5.3 LS 3.900in Crank 24 Tth Rlctor 6.125in H-Beam 3.898in Pistons Rotating Assembly
$3005.70
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Eagle Competition rotating assembly for Chevy LS 4.8/5.3 engines. Built for racing with nitrous and forced induction.
Key Features
- Fits Chevy 4.8L and 5.3L LS engines.
- Includes a 3.900-inch stroke crankshaft.
- Features 6.125-inch H-beam connecting rods.
- Comes with pistons sized for a 3.898-inch bore.
- Designed for racing applications, including nitrous and forced induction.
- Not CARB approved; cannot ship to California.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
Eagle is well-known for making strong internal engine components, and this competition rotating assembly is a prime example of their work for Chevy LS engines. If you're building a high-performance LS motor for your 4.8L or 5.3L application, especially one that will see racing use with nitrous or forced induction, this assembly is designed to handle the extra stress. It’s a complete package to get your engine’s core rotating parts sorted out.
This assembly features a 3.900-inch stroke crankshaft, which is a common upgrade for LS engines to increase displacement and power potential. Paired with it are 6.125-inch H-beam connecting rods. H-beam rods are a popular choice for performance builds because their I-beam shape offers a good balance of strength and weight, making them suitable for higher RPMs and increased cylinder pressures. The assembly also includes pistons sized for a 3.898-inch bore, ready to be fitted with your preferred piston rings and pins. This combination is engineered to work together, ensuring proper geometry and balance for your LS engine.
When putting together a serious engine build, having a well-matched rotating assembly like this one from Eagle is crucial. It simplifies the process of sourcing individual components and ensures they are designed to complement each other for optimal performance and durability under demanding conditions. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed specifications and installation instructions for precise measurements and assembly procedures.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 138113898
- UPC
- 793348045016
Frequently Asked Questions
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