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Est. 1957
Eagle

Eagle Chevrolet LS 4.8/5.3L 3.800 in Bore Rotating Assembly Kit

$3031.40

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Eagle LS 4.8/5.3L rotating assembly kit. Built for high-performance LS engines.

Key Features

  • Fits Chevy LS 4.8L and 5.3L engines with a 3.800 inch bore.
  • Includes a forged 4340 steel crankshaft with a 3.622 inch stroke and 24-tooth reluctor wheel.
  • Features 6.125 inch forged 4340 H-beam connecting rods with 7/16 inch ARP 8740 bolts.
  • Comes with Mahle forged 4032 aluminum pistons with a -4.2cc inverted dome and 3.800 inch bore.
  • Includes plasma-moly file-fit piston rings for a proper seal.
  • Equipped with King XP series rod and main bearings for durability.
This rotating assembly kit is designed for Chevrolet LS 4.8L and 5.3L engines. It is not CARB approved and cannot be shipped 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

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About this part

Product Details

This is the Eagle Chevrolet LS 4.8/5.3L 3.800 inch bore rotating assembly kit, part number 128783800. It's a well-built package designed for serious performance applications, including racing, nitrous, and forced induction setups for your LS-based engine.

Inside this kit, you'll find a forged 4340 steel crankshaft with a 3.622 inch stroke, designed to handle the stresses of high-RPM operation. It's set up for a 24-tooth reluctor wheel, common on many LS engines. The connecting rods are 6.125 inch long H-beam style, forged from 4340 steel and secured with 7/16 inch ARP 8740 bolts, known for their strength and reliability under load. The pistons are forged 4032 aluminum from Mahle, featuring an inverted dome with a -4.2cc volume and a 3.800 inch bore, paired with plasma-moly file-fit rings for a good seal. To complete the assembly, King XP series rod and main bearings are included, offering robust performance for demanding conditions.

This kit is a solid foundation for rebuilding or upgrading your LS engine's bottom end. Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and torque specifications.

Specifications

Brand
Eagle
Manufacturer Part #
128783800
UPC
793348009148

Frequently Asked Questions

Eagle Chevrolet LS 4.8/5.3L 3.800 in Bore Rotating Assembly Kit

$3031.40