What is the horsepower limit for this rotating assembly?

With the standard 7/16-inch ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. An optional upgrade to ARP 2000 cap screws increases the support to 1,500 horsepower.

What is the bore and stroke of this assembly?

This Manley rotating assembly features a 4.250-inch stroke and a 4.600-inch bore, resulting in a 565 cubic inch displacement for Big Block Chevrolet engines.

What is included with 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 pistons with premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 38565H
UPC: 807298086705

Manley Rotating Assembly, BBC 565 4.250 STROKE/4.600/-3cc

Name: Manley Rotating Assembly, BBC 565 4.250 STROKE/4.600/-3cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-565-4-250-stroke-4-600-3cc-t14-881191
Price: 3891.03 USD
Availability: BackOrder

$3891.03

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 565 4.250 STROKE/4.600/-3cc. Built for high-horsepower BBC builds up to 1500 HP.

Key Features

This rotating assembly includes a 4340 forged steel crankshaft with a 4.250-inch stroke.
It features 4340 forged steel H-beam connecting rods fitted with 7/16-inch ARP 8740 cap screws.
The assembly includes 2618 forged aluminum Platinum Series pistons with a -3cc dish and premium chrome moly wrist pins.
With ARP 8740 cap screws, this assembly is rated for up to 900 horsepower.
Upgrading to optional ARP 2000 cap screws increases the horsepower rating to 1,500 HP.
The bore size for this assembly is 4.600 inches, creating a 565 cubic inch displacement for BBC engines.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines. 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

Starting with a 4340 forged steel crankshaft, this Manley rotating assembly is built for serious BBC engine builds. The 4.250-inch stroke combined with the 4.600-inch bore creates a 565 cubic inch displacement, perfect for those looking to maximize power output from their big block Chevrolet. The included 2618 forged aluminum Platinum Series pistons feature a -3cc dish, which helps achieve a desired compression ratio when paired with the right cylinder heads and gasket combination. They also come with premium chrome moly wrist pins for added durability under stress.

Complementing the crankshaft and pistons are the 4340 forged steel H-beam connecting rods. These rods are equipped with 7/16-inch ARP 8740 cap screws as standard, capable of handling up to 900 horsepower. For those pushing the limits further, an upgrade to optional ARP 2000 cap screws is available, allowing this assembly to support an impressive 1,500 horsepower. This robust construction ensures reliability for high-performance applications where component failure is not an option.

This assembly is designed for builders who need a well-built foundation for a powerful engine. Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed specifications and installation guidelines for optimal performance and longevity.