What is the horsepower rating for this rotating assembly?

This Manley rotating assembly is rated for up to 900 horsepower when equipped with the standard 7/16" ARP 8740 cap screws. With an upgrade to optional ARP 2000 cap screws, the assembly is rated for up to 1,500 horsepower.

What materials are used in this rotating assembly?

The assembly features a 4340 forged steel crankshaft and 4340 forged steel H-beam connecting rods. The pistons are made from 2618 forged aluminum, and it includes premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 39582X
UPC: 807298087283

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-t14-881024
Price: 4057.01 USD
Availability: BackOrder

$4057.01

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Manley Rotating Assembly, BBC 582 4.375 STROKE/4.600/+43cc. Built for high-horsepower big block Chevy engines.

Key Features

Fits big block Chevy engines with a 582 cubic inch displacement, 4.375 inch stroke, and 4.600 inch bore.
Includes a 4340 forged steel crankshaft for strength and durability.
Comes with 4340 forged steel H-beam connecting rods featuring 7/16" ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for increased horsepower capacity.
Features 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
Rated for up to 900 horsepower with ARP 8740 bolts and up to 1,500 horsepower with optional ARP 2000 bolts.

This rotating assembly is designed for big block Chevy engines with a 582 cubic inch displacement, 4.375 inch stroke, and 4.600 inch bore. Check manufacturer specifications to confirm compatibility with your specific engine build.

⚠️ 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 Performance rotating assembly is built for serious big block Chevy builds, specifically the 582 cubic inch combination with a 4.375 inch stroke and 4.600 inch bore. It's a well-built package designed to handle significant power, making it a solid choice for performance engine builders who need a strong foundation.

At the heart of this assembly is a 4340 forged steel crankshaft, known for its strength and durability under high stress. Paired with it are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16" ARP 8740 cap screws, a popular choice for many performance applications. For those pushing the limits even further, there's an option to upgrade to ARP 2000 cap screws, which Manley rates for up to 1,500 horsepower. The pistons are 2618 forged aluminum from Manley's Platinum Series, complete with premium chrome moly wrist pins, ensuring they can withstand the intense pressures and temperatures of a high-performance engine.

This assembly is rated for up to 900 horsepower when using the standard ARP 8740 bolts, and up to 1,500 horsepower with the optional ARP 2000 bolts. Please note that this assembly is not CARB approved and cannot be shipped to California. It's a robust component set for builders aiming for substantial power output from their big block Chevy.