What horsepower levels can this rotating assembly handle?

With the standard ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. If you opt for the ARP 2000 cap screws, the horsepower range is increased to 1,500.

What components are included in this rotating assembly?

This assembly includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.

Is this rotating assembly legal for use in California?

No, this rotating assembly is not CARB approved and cannot be shipped to California due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 29572X
UPC: 807298087580

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-t14-880947
Price: 3977.32 USD
Availability: BackOrder

$3977.32

On Backorder

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

Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/+43cc. Includes forged steel crank, H-beam rods, and aluminum pistons.

Key Features

This rotating assembly includes a 4340 forged steel crankshaft.
It comes with 4340 forged steel H-beam connecting rods featuring 7/16? ARP 8740 cap screws.
The assembly includes 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
This rotating assembly is rated for up to 900 horsepower with the standard ARP 8740 cap screws.
With optional ARP 2000 cap screws, the horsepower range is increased to 1,500.
This part 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 for a BBC 572 engine includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins. This is a well-built package designed for serious performance builds.

The crankshaft is forged from 4340 steel, offering a strong foundation for high-output engines. The H-beam connecting rods are also forged from 4340 steel and come standard with ARP 8740 cap screws, capable of handling up to 900 horsepower. For those pushing the limits, optional ARP 2000 cap screws are available, allowing this assembly to support up to 1,500 horsepower. The Platinum Series pistons are forged from 2618 aluminum, a material known for its strength and thermal expansion properties, paired with durable chrome moly wrist pins.

This assembly is intended for high-performance applications and is not CARB approved, meaning it cannot be shipped to California. Please consult with your engine builder to ensure this rotating assembly meets the specific requirements of your build.