Specifications
- Brand
- Eagle
- Part #
- 638733898
- UPC
- 793348060989

Eagle Chevy 4.8/5.3 LS 3.900in Crank 58 Tth Rlctor 6.125in I-Beam 3.898in Pistons Rotating Assembly
$2731.58
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Eagle Pro Street rotating assembly for Chevy 4.8/5.3 LS engines. Built 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 3.898-inch bore.
- Designed for naturally-aspirated racing applications.
- Includes a 58-tooth reluctor wheel for engine management compatibility.
⚠️ 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 Pro Street rotating assembly is a prime example of their work for Chevy LS engines. If you're building a naturally-aspirated LS for racing, this assembly is designed to handle the demands of that kind of performance. It's a complete package that brings together the key rotating parts you need to rebuild or upgrade your engine's core.
This assembly features a 3.900-inch stroke crankshaft, which is a common choice for increasing displacement and torque in 4.8L and 5.3L LS blocks. Paired with the crankshaft are 6.125-inch I-beam connecting rods. These rods are a solid choice for performance applications, offering a good balance of strength and weight. The assembly also includes pistons sized for a 3.898-inch bore, which is standard for many 5.3L LS applications, and it's set up for a 58-tooth reluctor wheel, essential for proper engine management with many LS ECUs. Everything in this kit is balanced to work together, simplifying the assembly process and ensuring your engine's internals are ready for high RPMs and significant power output.
When you're putting together a performance engine, the rotating assembly is the heart of it all. This Eagle kit gives you a well-built foundation. Keep in mind that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper balancing, assembly, and break-in procedures to ensure the longevity and performance of your new engine build.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 638733898
- UPC
- 793348060989
Frequently Asked Questions
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