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 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 strong 4340 forged steel. The pistons are constructed from lightweight and durable 2618 forged aluminum, and they include premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 39572H
UPC: 807298087108

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-t14-881007
Price: 4152.46 USD
Availability: BackOrder

$4152.46

On Backorder

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

Key Features

Fits Big Block Chevrolet (BBC) 572 applications.
Features a 4.250 inch stroke crankshaft.
Includes a 4340 forged steel crankshaft for strength.
Comes with 4340 forged steel H-beam connecting rods.
Connecting rods are equipped with 7/16-inch 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.

This rotating assembly is designed for Big Block Chevrolet (BBC) 572 engines. 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

If you're building a serious big-block Chevrolet engine, a strong rotating assembly is the heart of the operation. This Manley Performance rotating assembly is designed for the 572 cubic inch platform, featuring a 4.250-inch stroke to give you that big displacement power. It's a well-built foundation for a high-horsepower street or race engine.

At its core is a 4340 forged steel crankshaft, chosen for its strength and durability under extreme loads. Paired with this are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, capable of handling up to 900 horsepower. If your build demands even more, you can opt for ARP 2000 cap screws, which will support up to 1,500 horsepower. The assembly also includes 2618 forged aluminum Platinum Series pistons, known for their lightweight and strength, complete with premium chrome moly wrist pins.

This assembly is a significant investment for a performance engine build. It's important to note that this part is not CARB approved and cannot be shipped to California. Ensure you have the proper supporting components and expertise for installation to get the most out of this powerful rotating assembly.