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Est. 1957
Eagle

Eagle Chevy LS7 4.000in Crank 58 Tth Reluctor 6.125in I-Beam Rods 4.125in Pistons Rotating Assembly

$3154.71

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Eagle Chevy LS7 rotating assembly with 4.000" crank, 4.125" pistons, and 6.125" rods. Built for naturally-aspirated racing.

Key Features

  • Fits Chevy LS7 engines.
  • Includes a 4.000-inch forged 4140 crankshaft with a 58-tooth reluctor wheel.
  • Comes with 4.125-inch Arias forged 2618 flat-top pistons with a -3.1cc dish.
  • Features plasma-moly file-fit piston rings.
  • Includes 6.125-inch 4340 I-beam connecting rods with 7/16-inch ARP 8740 bolts.
  • Equipped with King XP rod and main bearings.
This rotating assembly is designed for Chevy LS7 engines. Please verify compatibility with your specific engine build.

⚠️ 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 Eagle Pro Street rotating assembly gives you the core components to rebuild or upgrade your Chevy LS7 engine. Inside this kit, you'll find a 4.000-inch forged 4140 crankshaft, designed for strength and durability. It also includes 4.125-inch Arias forged 2618 flat-top pistons with a -3.1cc dish, paired with plasma-moly file-fit rings. For connecting the pistons to the crankshaft, the assembly comes with 6.125-inch 4340 I-beam connecting rods, secured by 7/16-inch ARP 8740 bolts. To complete the rotating assembly, King XP rod and main bearings are included, ensuring smooth operation and proper lubrication.

Eagle designed this Pro Street assembly specifically for naturally-aspirated racing applications. The use of forged materials for the crankshaft, pistons, and connecting rods means these components can handle the stresses of high-performance engines. The 4340 I-beam rods are well-known for their strength in demanding builds, and the ARP bolts are a trusted name for reliable fastening under extreme loads. The Arias pistons are forged from 2618 aluminum, a common choice for racing pistons due to its thermal expansion properties, and the flat-top design with a -3.1cc dish is suitable for various compression ratio targets. The plasma-moly file-fit rings allow for precise gapping to match your specific engine build and desired clearances.

This assembly is a solid foundation for a performance LS7 build. Keep in mind that this kit is not CARB approved and cannot be shipped to California. Always refer to manufacturer installation instructions for proper assembly and break-in procedures to ensure the longevity of your new rotating assembly.

Specifications

Brand
Eagle
Manufacturer Part #
628274125
UPC
793348026688

Frequently Asked Questions

Eagle Chevy LS7 4.000in Crank 58 Tth Reluctor 6.125in I-Beam Rods 4.125in Pistons Rotating Assembly

$3154.71