What is the horsepower rating for this rotating assembly?

With the standard 7/16-inch ARP 8740 cap screws, this assembly is rated for up to 900 horsepower. Upgrading to optional ARP 2000 cap screws raises the rating to 1,500 horsepower.

What materials are used in this Manley rotating assembly?

The crankshaft and connecting rods are made from 4340 forged steel. The pistons are 2618 forged aluminum, and they include Premium Chrome Moly wrist pins.

Is this assembly compatible with all Big Block Chevrolet engines?

This specific assembly is configured for a 565 cubic inch displacement with a 4.250-inch stroke and 4.600-inch bore. It's crucial to verify these dimensions and the piston dish volume against your intended engine build specifications.

Specifications

Brand: Manley Performance
Part #: 38565RHX
UPC: 807298086750

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-t14-881196
Price: 4012.19 USD
Availability: BackOrder

$4012.19

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.

Key Features

This rotating assembly fits Big Block Chevrolet (BBC) engines with a 565 cubic inch displacement.
It features a 4.250-inch stroke crankshaft and a 4.600-inch bore with a -3cc piston dish.
The crankshaft is constructed from durable 4340 forged steel for strength.
Connecting rods are 4340 forged steel H-beam design with 7/16-inch ARP 8740 cap screws.
Pistons are 2618 forged aluminum Platinum Series with Premium Chrome Moly wrist pins.
The assembly supports up to 900 horsepower with standard ARP 8740 cap screws.

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

If you're building a serious big-block Chevrolet engine, a strong rotating assembly is the heart of the operation. This Manley Performance rotating assembly is designed for the 565 cubic inch displacement, featuring a 4.250-inch stroke and a 4.600-inch bore with a -3cc piston dish. It's the kind of foundation that serious engine builders rely on for extreme performance applications.

At its core is a robust 4340 forged steel crankshaft, chosen for its strength and durability 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, a well-known name in high-strength fasteners, capable of handling up to 900 horsepower. For those pushing the limits even further, there's an option to upgrade to ARP 2000 cap screws, which raises the horsepower ceiling to a remarkable 1,500 HP.

The pistons are Manley's own Platinum Series, made from 2618 forged aluminum for a great balance of strength and light weight. They include Premium Chrome Moly wrist pins, which are known for their durability. This assembly is a solid choice for anyone looking to build a powerful BBC engine that can handle significant output. Please note that this assembly is not CARB approved and cannot be shipped to California.