Auto Barn
Est. 1957
Eagle

Eagle Chevy LS1 4.000in Crank 24 Tth Reluctor 6.125in I-Beam Rods 3.913in Pistons Balanced Assembly

$2872.49

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Eagle Chevy LS1 4.000in Crank Balanced Assembly. Built with a forged 4140 crank and 4340 I-beam rods for naturally-aspirated racing.

Key Features

  • Fits Chevy LS1 engines.
  • Includes a 4.000-inch forged 4140 crankshaft with a 24-tooth reluctor wheel.
  • Features 6.125-inch I-beam connecting rods forged from 4340 steel with 7/16-inch ARP 8740 bolts.
  • Comes with forged 4032 DSS -5cc flat top pistons (3.913-inch bore) and plasma-moly file-fit rings.
  • Includes King XP rod and main bearings for robust protection.
  • The assembly is balanced for improved performance and longevity.
This rotating assembly is designed for Chevy LS1 engines. Please verify compatibility with your specific vehicle application.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042
About this part

Product Details

Starting with a 4.000-inch forged 4140 crankshaft, this balanced rotating assembly from Eagle is built for serious performance in naturally-aspirated racing applications. The crankshaft features a 24-tooth reluctor wheel, essential for proper engine management in LS1 applications. This assembly is designed to handle the demands of high-RPM operation, making it a solid foundation for a performance engine build.

Complementing the crankshaft are 6.125-inch long I-beam connecting rods forged from strong 4340 steel. These rods are secured with 7/16-inch ARP 8740 bolts, known for their reliability under stress. The assembly includes forged 4032 DSS pistons with a -5cc flat top design and a 3.913-inch bore, paired with plasma-moly file-fit rings. This piston and ring combination is chosen for its durability and ability to seal well under racing conditions. King XP rod and main bearings are included, offering robust protection for the rotating assembly.

This balanced assembly is ready to be installed into your Chevy LS1 engine. Please note that this part is not CARB approved and cannot be shipped to California. It is recommended to consult manufacturer installation instructions for proper assembly and setup.

Specifications

Brand
Eagle
Manufacturer Part #
B637003913
UPC
793348052489

Frequently Asked Questions

Eagle Chevy LS1 4.000in Crank 24 Tth Reluctor 6.125in I-Beam Rods 3.913in Pistons Balanced Assembly

$2872.49