What is the horsepower rating for this rotating assembly?

This Manley rotating assembly is rated for up to 750 horsepower with the standard ARP 8740 cap screws. If you upgrade to ARP 2000 cap screws, the assembly can support up to 1,500 horsepower.

What type of pistons are included in this assembly?

The assembly includes 2618 forged aluminum pistons from Manley's Platinum Series. These are flat-top pistons with a -4cc dish and come with Premium Chrome Moly wrist pins.

Does this rotating assembly require balancing?

Rotating assemblies, especially those intended for high-performance applications, often require balancing to ensure smooth operation and longevity. It is recommended to consult with a professional engine builder or refer to Manley's installation guidelines for specific balancing requirements.

Specifications

Brand: Manley Performance
Part #: 290730X
UPC: 807298115153

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

Name: Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-sbc-355-3-480-stroke-4cc-flat-t14-881272
Price: 3276.84 USD
Availability: BackOrder

$3276.84

On Backorder

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

Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT. A well-built rotating assembly for serious engine builds.

Key Features

Fits Small Block Chevy (SBC) engines.
Features a 3.480-inch stroke crankshaft for a 355 cubic inch displacement.
Includes a lightweight 4340 forged steel crankshaft.
Comes with 4340 forged steel H-beam connecting rods.
Connecting rods use 7/16" ARP 8740 cap screws, with an option for ARP 2000.
Includes 2618 forged aluminum Platinum Series pistons with a -4cc dish.

This rotating assembly is designed for Small Block Chevy (SBC) engines. Please verify compatibility with your specific engine block and other components before purchase.

⚠️ 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

If you're building a high-performance Small Block Chevy engine, a strong rotating assembly is the heart of the operation. This Manley Performance rotating assembly is designed for builds aiming for significant power, supporting up to 750 horsepower with its standard ARP 8740 cap screws, and an impressive 1,500 horsepower when you opt for the ARP 2000 cap screws. It's a solid foundation for a street-strip machine or a dedicated race engine.

At its core is a lightweight 4340 forged steel crankshaft with a 3.480-inch stroke, providing the displacement for a 355 cubic inch engine. Paired with this are robust 4340 forged steel H-beam connecting rods, known for their strength and reliability under stress. The assembly includes 2618 forged aluminum pistons from Manley's Platinum Series, featuring a flat top with a -4cc dish and Premium Chrome Moly wrist pins. These components are selected for their durability and ability to handle the demands of a powerful engine.

This rotating assembly is a critical component for anyone serious about extracting maximum performance from their Small Block Chevy. Ensure you check manufacturer specifications for compatibility with your specific block and cylinder heads, as well as any required balancing procedures before installation.