Specifications
- Brand
- Eagle
- Part #
- 138763820
- UPC
- 793348057446

Eagle Chevy 4.8/5.3 LS 3.900in Crank 58 Tth Reluctor 6.125in H-Beam 3.820in Piston Rotating Assembly
$2893.70
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Eagle Chevy LS 4.8/5.3 rotating assembly. Features a 3.900" crank and 6.125" H-beam rods for high-performance builds.
Key Features
- Fits Chevy 4.8L and 5.3L LS engines.
- Includes a 3.900-inch stroke crankshaft with a 58-tooth reluctor wheel.
- Features 6.125-inch long H-beam connecting rods for strength.
- Comes with 3.820-inch diameter pistons.
- 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
This Eagle Competition Rotating Assembly starts with a 3.900-inch stroke crankshaft, specifically designed for Chevy 4.8L and 5.3L LS engines. It's built with a 58-tooth reluctor wheel, making it compatible with the factory ECU for your LS build. This assembly is intended for serious performance applications, including racing with nitrous or forced induction, where reliability under extreme stress is paramount.
The heart of this assembly includes 6.125-inch long H-beam connecting rods. These rods are known for their strength and ability to handle high horsepower loads without flexing. Paired with these rods are 3.820-inch diameter pistons, ready to be fitted with your preferred piston rings and pin configuration. The combination of a robust crankshaft, strong connecting rods, and appropriately sized pistons creates a well-balanced rotating assembly that can withstand the demands of a high-performance engine.
When rebuilding or significantly upgrading your LS engine, a complete rotating assembly like this from Eagle takes the guesswork out of matching critical components. It ensures that the crankshaft, connecting rods, and pistons are designed to work together harmoniously, contributing to smoother engine operation and improved power delivery. Remember that this assembly is not CARB approved and cannot be shipped to California. Always consult manufacturer instructions for proper installation and break-in procedures.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 138763820
- UPC
- 793348057446
Frequently Asked Questions
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