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 materials are used in this Manley rotating assembly?

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

What is included with this rotating assembly?

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

Specifications

Brand: Manley Performance
Part #: 38615H
UPC: 807298093383

Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/-3cc

Name: Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/-3cc
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-bbc-615-4-625-stroke-4-600-3cc-t14-881210
Price: 3891.03 USD
Availability: BackOrder

$3891.03

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/-3cc. Built for high-horsepower BBC builds.

Key Features

Fits Big Block Chevrolet (BBC) engines.
Includes a 4340 forged steel crankshaft with a 4.625 inch stroke.
Features 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.
Comes with 2618 forged aluminum Platinum Series pistons with a -3cc dish.
Includes premium chrome moly wrist pins.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines. Please verify compatibility with your specific engine build and specifications.

⚠️ 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 for high-performance street or track use, a strong rotating assembly is the heart of the operation. This Manley Performance rotating assembly is designed to handle significant power, giving you a solid foundation for your build. It includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods, and 2618 forged aluminum pistons, all selected for their strength and reliability under demanding conditions.

The crankshaft is forged from 4340 steel, a material known for its excellent strength-to-weight ratio, making it ideal for handling the stresses of high RPM and significant combustion pressures. Paired with this are the 4340 forged steel H-beam connecting rods. These rods come standard with 7/16" ARP 8740 cap screws, which are robust enough to support up to 900 horsepower. For those pushing the limits even further, optional ARP 2000 cap screws are available, allowing this assembly to handle up to 1,500 horsepower.

The pistons are Manley's Platinum Series, made from 2618 forged aluminum, a common choice for high-performance applications due to its durability and ability to withstand high temperatures. They feature a -3cc dish volume and come with premium chrome moly wrist pins. This assembly is a well-built package for anyone serious about maximizing the potential of their big-block Chevy engine. Please note that this assembly is not CARB approved and cannot be shipped to California.