What horsepower levels can this Manley rotating assembly support?

With the included 7/16-inch ARP 8740 cap screws on the connecting rods, this assembly is rated for up to 900 horsepower. Upgrading to ARP 2000 cap screws allows it to support up to 1,500 horsepower.

What components are included in this rotating assembly?

This package 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.

Specifications

Brand: Manley Performance
Part #: 39582HXX
UPC: 807298087221

Manley Rotating Assembly, BBC 582 4.375 STROKE/4.600/+43cc

Name: Manley Rotating Assembly, BBC 582 4.375 STROKE/4.600/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-582-4-375-stroke-4-600-43cc-t14-881018
Price: 4181.04 USD
Availability: BackOrder

$4181.04

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 582 4.375 STROKE/4.600/+43cc. Built for high-horsepower BBC builds.

Key Features

This rotating assembly 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.
The crankshaft is forged from 4340 steel for strength and durability.
The H-beam connecting rods are also forged from 4340 steel and are equipped with 7/16-inch ARP 8740 cap screws, with an option for ARP 2000 fasteners.
Manley's Platinum Series pistons are made from 2618 forged aluminum and come with premium chrome moly wrist pins.
This assembly is rated for up to 900 horsepower with the standard ARP 8740 fasteners.
With the optional ARP 2000 cap screws, this rotating assembly can support up to 1,500 horsepower.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines. Check manufacturer specifications for compatibility with your specific engine block and cylinder head combination.

⚠️ 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

When you're building a serious big-block Chevrolet engine, starting with a well-built rotating assembly is key. This Manley Performance rotating assembly is designed for the 582 cubic inch application, featuring a 4.375-inch stroke and a 4.600-inch bore with a +43cc piston dish. What you get in this package is a 4340 forged steel crankshaft, a set of 4340 forged steel H-beam connecting rods, and 2618 forged aluminum pistons. The connecting rods come with 7/16-inch ARP 8740 cap screws, with an option to upgrade to ARP 2000 fasteners for even more strength.

The pistons are Manley's Platinum Series, made from 2618 forged aluminum and include premium chrome moly wrist pins. This combination is built to handle serious power. With the standard ARP 8740 fasteners on the rods, this assembly is rated for up to 900 horsepower. If you opt for the ARP 2000 cap screws, the assembly is capable of handling up to 1,500 horsepower, making it a solid foundation for a high-performance street or race engine.

Please note that this assembly is not CARB approved and cannot be shipped to California. It's important to check all manufacturer specifications and ensure compatibility with your specific engine block and cylinder heads before installation.