What is the horsepower rating for this rotating assembly?

With the standard 7/16-inch 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 specific engine configuration does this assembly fit?

This rotating assembly is designed for Big Block Chevy (BBC) engines, specifically configured for a 565 cubic inch displacement. It features a 4.250-inch stroke crankshaft and is intended for a 4.600-inch bore with +43cc pistons.

Are there any restrictions on shipping this product?

Yes, this rotating assembly is not CARB approved and therefore cannot be shipped to California due to emissions regulations.

Specifications

Brand: Manley Performance
Part #: 29565R
UPC: 807298080581

Manley Rotating Assembly, BBC 565 4.250 STROKE/4.600/+43cc

Name: Manley Rotating Assembly, BBC 565 4.250 STROKE/4.600/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-565-4-250-stroke-4-600-43cc-t14-880933
Price: 4069.89 USD
Availability: BackOrder

$4069.89

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Manley Rotating Assembly, BBC 565 4.250 STROKE/4.600/+43cc. Built for high-horsepower BBC engines.

Key Features

Verified fitment for BBC 565 cubic inch engines.
Features a 4.250-inch stroke 4340 forged steel crankshaft.
Includes 4340 forged steel H-beam connecting rods with 7/16" ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for increased horsepower capacity.
2618 forged aluminum Platinum Series pistons are included.
Premium chrome moly wrist pins are part of the piston assembly.

This rotating assembly is designed for BBC 565 cubic inch engines with a 4.250-inch stroke and 4.600-inch bore. 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

Manley Performance is well-known for making strong internal engine components, and this BBC rotating assembly is a prime example of their commitment to building parts that can handle serious power. This kit is designed for a 565 cubic inch Big Block Chevy engine and features a 4.250-inch stroke crankshaft, intended for a 4.600-inch bore with a +43cc piston dish. It’s a complete package to get your engine’s bottom end built for performance.

At the heart of this assembly is a 4340 forged steel crankshaft, chosen 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-inch ARP 8740 cap screws, a solid choice for engines making up to 900 horsepower. If you plan to push your engine further, you can opt for ARP 2000 cap screws, which are rated for up to 1,500 horsepower. The pistons are forged aluminum from Manley's Platinum Series, designed for performance and longevity, and they include premium chrome moly wrist pins.

This rotating assembly is a substantial upgrade for any BBC build aiming for significant power. It’s important to 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.