What is the horsepower rating for this rotating assembly?

With the standard ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. If you choose the optional ARP 2000 cap screws, the rating increases to 1,500 horsepower.

What materials are used in this rotating assembly?

The crankshaft and connecting rods are made from 4340 forged steel. The pistons are forged from 2618 aluminum, and premium chrome moly wrist pins are included.

Specifications

Brand: Manley Performance
Part #: 38572HXX
UPC: 807298087023

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-t14-881202
Price: 3919.62 USD
Availability: BackOrder

$3919.62

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Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/-3cc. Built for high-horsepower BBC builds.

Key Features

Fits BBC 572ci engines with a 4.250-inch stroke and 4.625-inch bore.
Includes a 4340 forged steel crankshaft for durability.
Comes with 4340 forged steel H-beam connecting rods.
Connecting rods feature 7/16-inch ARP 8740 cap screws, with an option for ARP 2000.
2618 forged aluminum Platinum Series pistons are included.
Premium chrome moly wrist pins are part of the piston assembly.

This rotating assembly is designed for BBC 572ci engines with a 4.250-inch stroke and 4.625-inch bore. It is not CARB approved and cannot be shipped to California.

⚠️ 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 Manley rotating assembly starts with a 4340 forged steel crankshaft, featuring a 4.250-inch stroke. This is the heart of a serious big-block Chevy build, designed to handle significant power. The crankshaft is paired with 4340 forged steel H-beam connecting rods. These rods are robust and come equipped with 7/16-inch ARP 8740 cap screws, with an option to upgrade to ARP 2000 fasteners for even greater strength.

The pistons are forged from 2618 aluminum, part of Manley's Platinum Series, and include premium chrome moly wrist pins. This combination is chosen for its durability and performance under extreme conditions. With the standard ARP 8740 bolts, this assembly is rated for up to 900 horsepower. If you opt for the ARP 2000 cap screws, the assembly's capacity increases to an impressive 1,500 horsepower, making it suitable for a wide range of high-performance applications.

This assembly is intended for serious engine builders looking to maximize the potential of a BBC 572ci engine. Please note that this part is not CARB approved and cannot be shipped to California. Always consult the manufacturer's documentation for complete installation details and specifications.