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Est. 1957
Eagle

Eagle Chevy 400 3.750in Crank 5.700in H-Beam -5cc Flat Top 4.125in Pistons Rotating Assembly

$2628.33

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Eagle Chevy 400 rotating assembly with forged crank, H-beam rods, and flat top pistons. Built for racing.

Key Features

  • This rotating assembly includes a 3.750-inch forged 4340 crankshaft.
  • It comes with 5.700-inch H-beam connecting rods featuring 7/16-inch ARP 8740 bolts.
  • The kit contains forged 4032 Mahle flat top pistons with a -5cc dish, measuring 4.125 inches in diameter.
  • Plasma-moly file-fit piston rings are included for custom gap setting.
  • King XP rod and main bearings are part of this comprehensive assembly.
  • This rotating assembly is designed for racing applications, including nitrous and forced induction.

⚠️ 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 Competition Rotating Assembly gives you a complete package for building a high-performance Chevy 400 engine. Inside this kit, you'll find a 3.750-inch forged 4340 crankshaft, ready to handle serious power. It's paired with 5.700-inch H-beam connecting rods, known for their strength and reliability in demanding applications. These rods come equipped with 7/16-inch ARP 8740 bolts, a solid choice for ensuring secure connections under high stress.

The pistons included are forged 4032 Mahle flat tops, measuring 4.125 inches in diameter with a -5cc dish. These are designed to work with the included plasma-moly file-fit piston rings, allowing for precise gap setting during installation. To round out the assembly, King XP rod and main bearings are provided, offering robust lubrication and wear protection for the crankshaft journals. This combination is engineered for all forms of racing, including setups using nitrous oxide or forced induction.

When assembling a performance engine like this, proper balancing is crucial. While this assembly is a well-built foundation, it's recommended to have the complete rotating assembly professionally balanced by a machine shop before installation. This ensures smooth operation and longevity for your engine build. Please note that this assembly is not CARB approved and cannot be shipped to California.

Specifications

Brand
Eagle
Manufacturer Part #
12501000
UPC
793348007786

Frequently Asked Questions

Eagle Chevy 400 3.750in Crank 5.700in H-Beam -5cc Flat Top 4.125in Pistons Rotating Assembly

$2628.33