What is the horsepower limit for this rotating assembly?

With the standard 7/16-inch ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. An optional upgrade to ARP 2000 cap screws increases the horsepower capability to 1,500.

What type of pistons are included in this kit?

This kit includes Manley's Platinum Series pistons, which are forged from 2618 aluminum for strength and durability. They also come with premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 28572HXX
UPC: 807298089706

Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/-3cc

Name: Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/-3cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-572-4-250-stroke-4-625-3cc-t14-881070
Price: 3839.92 USD
Availability: BackOrder

$3839.92

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Manley BBC 572 rotating assembly with a 4.250" stroke. Features 4340 forged steel components and forged aluminum pistons for high-horsepower builds.

Key Features

This rotating assembly includes a 4340 forged steel crankshaft and 4340 forged steel H-beam connecting rods.
The connecting rods come with 7/16-inch ARP 8740 cap screws, supporting up to 900 horsepower.
Optional ARP 2000 cap screws are available for the connecting rods, allowing for builds up to 1,500 horsepower.
It features 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
The assembly has a 4.250-inch stroke and a 4.625-inch bore size.
Pistons have a -3cc dish volume, contributing to specific compression ratio targets.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines with a 4.250" stroke and 4.625" bore. Check manufacturer specifications for 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

Forged from 4340 steel, the crankshaft and H-beam connecting rods in this Manley rotating assembly are built to handle serious power. This BBC 572 stroker kit is designed for builders looking to push the limits, featuring a 4.250-inch stroke that significantly increases displacement for big-block Chevrolet engines. The 4.625-inch bore size and -3cc piston dish are specific choices for achieving optimal compression ratios with common cylinder head combinations.

The connecting rods are equipped with 7/16-inch ARP 8740 cap screws, a solid choice for builds up to 900 horsepower. For those aiming even higher, an upgrade to ARP 2000 cap screws is available, pushing the capability to an impressive 1,500 horsepower. Complementing the robust bottom end are Manley's Platinum Series pistons, forged from 2618 aluminum for strength and lightness, and paired with premium chrome moly wrist pins. This combination ensures durability and performance under extreme conditions.

This assembly is a critical component for a high-performance engine rebuild. It's important to note that this part is not CARB approved and cannot be shipped to California. Always consult your engine builder and manufacturer's specifications for proper installation and component matching to ensure the longevity and performance of your build.