What is the horsepower rating for this rotating assembly?

With the standard 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 materials are used in this rotating assembly?

The crankshaft and connecting rods are constructed from strong 4340 forged steel. The pistons are made from 2618 forged aluminum, and the assembly includes premium chrome moly wrist pins.

What is the compression ratio achieved with these pistons?

The dome piston design included in this assembly contributes to a 14.0 compression ratio.

Specifications

Brand: Manley Performance
Part #: 39565
UPC: 807298086897

Manley Chevrolet Big Block 565 cid 4.600in Bore 4.250in Stroke +43cc Dome 14.0 CR Rotating Assembly

Name: Manley Chevrolet Big Block 565 cid 4.600in Bore 4.250in Stroke +43cc Dome 14.0 CR Rotating Assembly
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-big-block-565-cid-4-600in-bore-4-250in-strok-t14-586522
Price: 4039.22 USD
Availability: BackOrder

$4039.22

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Chevrolet Big Block 565 cid rotating assembly. Features 4340 forged steel crank and rods, and 2618 forged aluminum pistons for high-horsepower builds.

Key Features

Fits Chevrolet Big Block engines with 4.600 inch bore and 4.250 inch stroke.
Includes a 4340 forged steel crankshaft for strength and durability.
Features 4340 forged steel H-beam connecting rods with 7/16" ARP 8740 cap screws, rated for up to 900 horsepower.
Optional ARP 2000 cap screws are available for connecting rods, supporting up to 1,500 horsepower.
2618 forged aluminum Platinum Series pistons are included, designed for high-performance applications.
Premium chrome moly wrist pins are part of the piston assembly for enhanced durability.

This rotating assembly is designed for Chevrolet Big Block engines with a 565 cubic inch displacement, 4.600 inch bore, and 4.250 inch stroke. It is not CARB approved and cannot ship 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 performance Chevrolet big block engine, a robust rotating assembly is the heart of your build. This Manley Performance rotating assembly is designed for 565 cubic inch displacement, featuring a 4.600 inch bore and a 4.250 inch stroke. It's engineered to handle significant power, with a dome piston design that contributes to a 14.0 compression ratio, making it suitable for high-performance street or race applications.

At its core, this assembly includes 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 equipped with 7/16 inch ARP 8740 cap screws for reliable performance up to 900 horsepower, or you can opt for ARP 2000 cap screws for an even stronger setup capable of handling up to 1,500 horsepower. The pistons are Manley's Platinum Series, made from 2618 forged aluminum for a good balance of strength and light weight, and they include premium chrome moly wrist pins for added longevity.

This is a well-built rotating assembly ready for a demanding build. Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and torque specifications.