What is the horsepower rating for this rotating assembly?

With the standard 7/16? 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 is the bore and stroke for this assembly?

This rotating assembly features a 4.375 inch stroke. The pistons are designed for a 4.600 inch bore with a +43cc chamber volume.

What materials are used in this rotating assembly?

The crankshaft and connecting rods are constructed from 4340 forged steel for strength. The pistons are made from 2618 forged aluminum and include premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 29598X
UPC: 807298087702

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-t14-880967
Price: 4057.01 USD
Availability: BackOrder

$4057.01

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. Handles up to 1500 HP.

Key Features

Fits Big Block Chevrolet (BBC) engines with a 582 cubic inch displacement.
Features a 4.375 inch stroke crankshaft made from 4340 forged steel.
Includes 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for the connecting rods, increasing horsepower capacity.
Comes with 2618 forged aluminum Platinum Series pistons and premium chrome moly wrist pins.
Rated for up to 900 horsepower with standard ARP 8740 bolts, and up to 1,500 horsepower with optional ARP 2000 bolts.

This rotating assembly is designed for Big Block Chevrolet (BBC) 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, this Manley Performance rotating assembly is a solid foundation. This kit is designed for the 582 cubic inch displacement with a 4.375-inch stroke and pistons that accommodate a 4.600-inch bore with a +43cc chamber volume. It’s a well-built package that’s ready to handle significant power levels.

At the heart of this assembly is a 4340 forged steel crankshaft, chosen for its strength and reliability under high stress. 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 supporting up to 900 horsepower. For those pushing the limits, an upgrade to optional ARP 2000 cap screws is available, raising the horsepower ceiling to a robust 1,500 HP. The included 2618 forged aluminum Platinum Series pistons are lightweight yet strong, and they come complete with premium chrome moly wrist pins for durability.

This rotating assembly is a substantial investment for a high-performance build. It’s important to note that this assembly is not CARB approved and cannot be shipped to California. Ensure you have the correct supporting components and machining to properly install this high-performance rotating assembly.