What is the horsepower rating for this rotating assembly?

With the standard ARP 8740 cap screws on the connecting rods, this assembly is rated for up to 900 horsepower. If you opt for the upgrade to ARP 2000 cap screws, the rating increases to 1,500 horsepower.

What materials are used in this Manley rotating assembly?

The crankshaft and connecting rods are made from 4340 forged steel. The pistons are 2618 forged aluminum, and they come with Premium Chrome Moly wrist pins.

Are there any restrictions on shipping this part?

Yes, this part is not CARB approved and cannot be shipped to California due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 29572H
UPC: 807298080369

Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/+43cc

Name: Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-572-4-250-stroke-4-625-43cc-t14-880939
Price: 4072.77 USD
Availability: BackOrder

$4072.77

On Backorder

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

Manley Performance BBC 572 rotating assembly. Features a 4340 forged steel crankshaft and H-beam connecting rods for high-horsepower builds.

Key Features

Fits BBC 572 engines with a 4.250 inch stroke and 4.625 inch bore with +43cc piston dish.
Includes a 4340 forged steel crankshaft for a strong foundation.
Comes with 4340 forged steel H-beam connecting rods.
Connecting rods are equipped with 7/16" ARP 8740 cap screws, supporting up to 900 horsepower.
Optional ARP 2000 cap screws are available for connecting rods, supporting up to 1,500 horsepower.
Features 2618 forged aluminum Platinum Series pistons with Premium Chrome Moly wrist pins.

This rotating assembly is designed for BBC 572 engines. 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 internal engine components, and this BBC 572 rotating assembly is a prime example of their commitment to building parts that can handle serious power. If you're putting together a big-block Chevrolet engine for high-performance use, this assembly is designed to be the heart of your build. It includes everything you need to get your bottom end rotating with confidence.

At the core of this assembly is a 4340 forged steel crankshaft with a 4.250-inch stroke, providing the foundation for a 572 cubic inch displacement. Paired with this are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, which are rated for up to 900 horsepower. If your build aims even higher, you have the option to upgrade to ARP 2000 cap screws, pushing the horsepower limit to a robust 1,500. The assembly also includes 2618 forged aluminum Platinum Series pistons, known for their strength and heat resistance, complete with Premium Chrome Moly wrist pins.

This rotating assembly is a solid option for builders looking for a well-built foundation for a powerful engine. Please note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and torque specifications.