What is the horsepower rating for this rotating assembly?

With the standard 7/16-inch ARP 8740 cap screws, this assembly is rated for 900 horsepower. If you opt for the ARP 2000 cap screws, the horsepower range increases to 1,500.

What materials are used in this Manley rotating assembly?

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

Is this rotating assembly compatible with all states?

No, this part is not CARB approved and cannot be shipped to California due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 38565RH
UPC: 807298086743

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-t14-881195
Price: 4001.40 USD
Availability: BackOrder

$4001.40

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

Fits Big Block Chevrolet (BBC) 565 cubic inch applications.
Features a 4.250-inch stroke and 4.600-inch bore with -3cc piston dish.
Includes a 4340 forged steel crankshaft for robust strength.
Comes with 4340 forged steel H-beam connecting rods.
Connecting rods are equipped with 7/16-inch ARP 8740 cap screws, with an option for ARP 2000.
2618 forged aluminum Platinum Series pistons are included.

This rotating assembly is designed for Big Block Chevrolet (BBC) 565 cubic inch applications. Check manufacturer specifications for compatibility with specific engine blocks and configurations.

⚠️ 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 BBC 565 cubic inch applications, featuring a 4.250-inch stroke and 4.600-inch bore with -3cc piston dish. It's a well-built foundation for a powerful engine build.

The crankshaft is forged from 4340 steel, offering excellent strength and durability for demanding use. Paired with this are 4340 forged steel H-beam connecting rods, which come standard with 7/16-inch ARP 8740 cap screws. For even higher horsepower demands, you can opt for ARP 2000 cap screws, allowing this assembly to handle up to 1,500 horsepower. The pistons are forged from 2618 aluminum, part of Manley's Platinum Series, and include premium chrome moly wrist pins for reliable performance. This assembly is rated for 900 horsepower with the standard ARP 8740 bolts and can be pushed to 1,500 horsepower with the optional ARP 2000 bolts.

This rotating assembly is a substantial upgrade for any performance BBC build. Please note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and balancing procedures.