Specifications
- Brand
- Eagle
- Part #
- 638163820
- UPC
- 793348060620

Eagle Chevy 4.8/5.3 LS 3.900in Crank 24 Tth Rlctor 6.125in I-Beam 3.820in Pistons Rotating Assembly
$2705.14
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Eagle Chevy 4.8/5.3 LS 3.900in Crank 24 Tth Rlctor 6.125in I-Beam 3.820in Pistons Rotating Assembly. Pro Street Assembly for naturally-aspirated racing.
Key Features
- Fits Chevy 4.8L and 5.3L LS engines.
- Includes a 3.900-inch stroke crankshaft.
- Features 6.125-inch I-beam connecting rods.
- Comes with pistons sized for a 3.820-inch bore.
- Designed for naturally-aspirated racing use.
- This assembly is not CARB approved and 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 Pro Street rotating assembly gives you the core components to rebuild or upgrade the bottom end of your Chevy 4.8L or 5.3L LS engine. You get a 3.900-inch stroke crankshaft, a set of 6.125-inch I-beam connecting rods, and pistons sized for a 3.820-inch bore. This assembly is specifically put together for naturally-aspirated racing applications, meaning it's built to handle the demands of engines that don't use forced induction like turbochargers or superchargers.
Eagle has a solid reputation for well-built engine components, and this rotating assembly is no exception. The I-beam connecting rods are a strong choice for performance builds, offering a good balance of strength and weight. The crankshaft is forged to handle the stresses of higher RPMs and increased cylinder pressures typical in racing. The pistons are designed to work with the specific bore size and stroke of this assembly, ensuring proper compression and piston-to-wall clearance when installed correctly. This kit is a great starting point for anyone looking to build a reliable, naturally-aspirated LS engine for the track.
When building an engine, especially for racing, it's crucial to ensure all components are balanced and installed with precision. This rotating assembly is designed to be a matched set, but you'll still want to verify clearances and consider balancing the entire assembly with your chosen flywheel or flexplate. Remember that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation guidelines for proper assembly and torque specifications.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 638163820
- UPC
- 793348060620
Frequently Asked Questions
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