What is the horsepower rating for this rotating assembly?

With the standard 7/16? ARP 8740 cap screws, 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 is included in this Manley rotating assembly?

This kit includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 29565HX
UPC: 807298087474

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-t14-880931
Price: 4083.56 USD
Availability: BackOrder

$4083.56

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/+43cc. Handles up to 1500 HP.

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 made from 4340 forged steel for strength.
The kit includes 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for the connecting rods, increasing the horsepower rating.
The pistons are 2618 forged aluminum from Manley's Platinum Series, designed for a 4.600 inch bore.
Premium chrome moly wrist pins are included with the pistons.

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

Manley Performance is well-known for making strong internal engine components, and this BBC 565 rotating assembly is a prime example of their commitment to building parts that can handle serious power. If you're building a big-block Chevrolet for high-performance applications, this assembly is designed to be the heart of your engine.

This kit includes a 4340 forged steel crankshaft, which is a solid foundation for any performance build. Paired with it are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16? ARP 8740 cap screws, but you can opt for ARP 2000 cap screws for even more strength, allowing this assembly to handle up to 1,500 horsepower. The pistons are forged aluminum from Manley's Platinum Series, complete with premium chrome moly wrist pins, and are designed for a 4.600 inch bore with a +43cc chamber volume. With the standard ARP 8740 bolts, this assembly is rated for up to 900 horsepower, giving you a clear upgrade path as your power goals increase.

This rotating assembly is a significant investment for a serious engine build. It's important to note that this part is not CARB approved and cannot be shipped to California. Ensure you consult with your engine builder to confirm this assembly meets your specific project requirements and local emissions regulations.