What is the horsepower rating for this rotating assembly?

This Manley rotating assembly is rated for up to 900 horsepower when using the standard ARP 8740 cap screws on the connecting rods. With the optional ARP 2000 cap screws, the assembly can support up to 1,500 horsepower.

What materials are used in this rotating assembly?

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

Specifications

Brand: Manley Performance
Part #: 39615R
UPC: 807298093314

Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/+43cc

Name: Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/+43cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-615-4-625-stroke-4-600-43cc-t14-881029
Price: 4149.58 USD
Availability: BackOrder

$4149.58

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 615 4.625 STROKE/4.600/+43cc. Built for high-horsepower BBC builds.

Key Features

The crankshaft is constructed from 4340 forged steel for strength.
Includes 4340 forged steel H-beam connecting rods with 7/16-inch ARP 8740 cap screws.
Optional ARP 2000 cap screws are available for increased rod strength.
Features 2618 forged aluminum Platinum Series pistons.
Premium chrome moly wrist pins are included with the pistons.
Rated for up to 900 horsepower with 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Starting with a 4340 forged steel crankshaft means this Manley rotating assembly is built for serious power. This BBC (Big Block Chevrolet) assembly is designed for builders looking to push the limits, featuring a 4.625-inch stroke and a 4.600-inch bore with +43cc piston dish volume. The included 4340 forged steel H-beam connecting rods are robust, coming standard with 7/16-inch ARP 8740 cap screws, with an option to upgrade to ARP 2000 fasteners for even greater strength.

The 2618 forged aluminum Platinum Series pistons are paired with premium chrome moly wrist pins, ensuring durability under extreme conditions. This combination is rated for up to 900 horsepower when using the standard ARP 8740 bolts, and can handle an impressive 1,500 horsepower with the optional ARP 2000 cap screws. This assembly is a solid foundation for a high-performance engine build where reliability and power are paramount.

Please note that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed specifications and installation instructions for complete compatibility and assembly procedures.