Auto Barn
Est. 1957
Manley Performance

Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT

$4636.60

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Manley Performance SBC 355 rotating assembly with a 3.480" stroke. Features forged steel crankshaft and Pro Series I-Beam connecting rods.

Key Features

  • Fits Small Block Chevy 355 engines with a 3.480-inch stroke.
  • Features a lightweight 4340 forged steel crankshaft for strength and reduced rotational mass.
  • Includes Pro Series Lightweight I-Beam connecting rods with 7/16? ARP 2000 cap screws.
  • Comes with 2618 forged aluminum Platinum Series pistons and Premium Chrome Moly wrist pins.
  • Rated for up to 750 horsepower with ARP 8740 cap screws.
  • Capable of handling 1,500 horsepower with optional ARP 2000 cap screws.
This rotating assembly is designed for Small Block Chevy 355 engines with a 3.480-inch stroke. 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

Manley Performance is well-known for making strong, reliable internal engine components. This rotating assembly is built for a 355 cubic inch Small Block Chevy and features a 3.480-inch stroke. It’s a complete package designed to handle serious power, whether you're building a street machine or a dedicated race engine.

At the heart of this assembly is a lightweight 4340 forged steel crankshaft, chosen for its strength and ability to withstand high RPMs. Paired with this are Manley's Pro Series Lightweight I-Beam connecting rods, which come equipped with 7/16? ARP 2000 cap screws for a secure and robust connection. The pistons are 2618 forged aluminum from their Platinum Series, complete with Premium Chrome Moly wrist pins. This combination of materials and design means the assembly is built to last and perform under pressure.

This rotating assembly is rated for up to 750 horsepower when used with ARP 8740 cap screws, and can handle an impressive 1,500 horsepower with the optional ARP 2000 cap screws. It’s important to 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 balancing procedures.

Specifications

Brand
Manley Performance
Manufacturer Part #
290840HX
UPC
807298115320

Frequently Asked Questions

Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT

$4636.60