

Specifications
- Brand
- Eagle
- Part #
- 637643898
- UPC
- 793348027944

Eagle Chevy LS1 4.000in Crank 58 Tth Reluctor 6.125in I-Beam Rods 3.898in Pistons Rotating Assembly
$2568.15
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Eagle Chevy LS1 Pro Street rotating assembly with 4.000" forged crank, 6.125" I-beam rods, and 3.898" pistons. Ideal for naturally-aspirated racing.
Key Features
- Fits Chevy LS1 engines.
- Includes a 4.000-inch forged 4140 crankshaft.
- Features 6.125-inch 4340 I-beam connecting rods with 7/16-inch ARP 8740 bolts.
- Comes with 3.898-inch forged 4032 DSS pistons with a -15cc inverted dome.
- Includes plasma-moly file-fit rings for custom gapping.
- Equipped with King XP rod and main bearings.
⚠️ 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
If you're building a naturally-aspirated LS1 engine for racing, this Eagle Pro Street rotating assembly is a solid foundation. It includes a forged 4.000-inch crankshaft, 6.125-inch I-beam connecting rods with ARP 7/16-inch bolts, and 3.898-inch forged 4032 pistons designed for a -15cc inverted dome. This assembly is built to handle the demands of the track.
The crankshaft is forged from 4140 steel, offering strength for performance applications. The connecting rods are made from 4340 steel, known for its durability in high-stress environments, and come equipped with 7/16-inch ARP 8740 bolts for a secure connection. The included pistons are forged from 4032 aluminum, which has a lower expansion rate than 2618 aluminum, making them well-suited for performance street and race applications. They feature an inverted dome design with a -15cc volume and come with plasma-moly file-fit rings, allowing for precise gap setting during installation. King XP rod and main bearings are also included, providing reliable lubrication and reduced friction.
This rotating assembly is specifically configured for a 58-tooth reluctor wheel, common in many LS1 applications. While this assembly is built for performance, please note it is not CARB approved and cannot be shipped to California. Ensure you consult with your engine builder or refer to manufacturer instructions for proper installation and balancing procedures.
Specifications
- Brand
- Eagle
- Manufacturer Part #
- 637643898
- UPC
- 793348027944
Frequently Asked Questions
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