Auto Barn
Est. 1957
Eagle

Eagle Chevy 305 3.750in Crank 5.700in I-Beam Rods -10cc 3.766in Pistons Balanced Assembly

$1864.61

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Eagle Chevy 305 balanced rotating assembly with 3.750" crank, 5.700" I-beam rods, and KB hyperutectic pistons.

Key Features

  • Fits Chevy 305 engines.
  • Balanced rotating assembly for reduced vibration.
  • Includes 3.750" cast crankshaft.
  • Features 5.700" I-beam connecting rods with 3/8" ARP 8740 bolts.
  • KB hyperutectic pistons with -10cc inverted dome design (3.766" bore).
  • Plasma-moly standard gap rings included.

⚠️ 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

Eagle is well-known for building strong internal engine components, and this balanced rotating assembly is a prime example of their work for Chevy 305 engines. If you're looking to rebuild or upgrade the heart of your street vehicle, this assembly is designed to handle pump gas and naturally aspirated setups. It includes all the key pieces you need to get your engine rotating again, all balanced and ready for installation.

This assembly features a 3.750-inch cast crankshaft, paired with 5.700-inch I-beam connecting rods secured with 3/8-inch ARP 8740 bolts. The pistons are KB hyperutectic with an inverted dome design, creating a -10cc volume and measuring 3.766 inches in diameter. They come fitted with plasma-moly standard gap rings, which help ensure a good seal against the cylinder walls for efficient combustion. For smooth operation and reliable lubrication, King rod and main bearings are included.

This is a balanced assembly, meaning the crankshaft, connecting rods, pistons, rings, and bearings have been precisely weighted and matched to reduce engine vibration and improve overall performance. This saves you a significant step in the engine building process. Please note that this assembly is not CARB approved and cannot be shipped to California. It is intended for street use with pump gas and naturally aspirated applications.

Specifications

Brand
Eagle
Manufacturer Part #
B13102E030
UPC
793348010106

Frequently Asked Questions

Eagle Chevy 305 3.750in Crank 5.700in I-Beam Rods -10cc 3.766in Pistons Balanced Assembly

$1864.61