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 4340 forged steel. The pistons are 2618 forged aluminum, and the assembly includes premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 28572X
UPC: 807298089744

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-t14-881076
Price: 3715.89 USD
Availability: BackOrder

$3715.89

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 for 4.250 stroke engines. Handles up to 1500 HP.

Key Features

Fits BBC 572 engines with a 4.250-inch stroke.
Includes a 4340 forged steel crankshaft for strength.
Features 4340 forged steel H-beam connecting rods.
Connecting rods come with 7/16-inch ARP 8740 cap screws, supporting up to 900 HP.
Optional ARP 2000 cap screws allow support for up to 1,500 HP.
2618 forged aluminum Platinum Series pistons are included.

This rotating assembly is designed for BBC 572 engines with a 4.250-inch stroke. 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

This Manley Performance rotating assembly is built for BBC 572 engines with a 4.250-inch stroke. It's a well-built package designed to handle serious power, whether you're building a street machine or a dedicated race engine. A rotating assembly is the heart of your engine's bottom end, and this one uses strong, forged components to ensure reliability under demanding conditions.

At its core is a 4340 forged steel crankshaft, chosen for its strength and durability. Paired with it 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 aims higher, you can opt for ARP 2000 cap screws, which allow this assembly to support up to 1,500 horsepower. The pistons are Manley's Platinum Series, made from 2618 forged aluminum and include premium chrome moly wrist pins for added strength and reduced friction.

This assembly is a solid foundation for a high-performance BBC build. Keep in mind 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.