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 upgrade to optional ARP 2000 cap screws, it can support up to 1,500 horsepower.

Is this rotating assembly legal for use in California?

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

Specifications

Brand: Manley Performance
Part #: 39615RH

Manley BBC 615 4.625in Stroke x 4.600in Bore +43cc Piston Rotating Assembly

Name: Manley BBC 615 4.625in Stroke x 4.600in Bore +43cc Piston Rotating Assembly
Brand: Manley Performance
SKU: manley-performance-manley-bbc-615-4-625in-stroke-x-4-600in-bore-43cc-piston-rota-t14-542854
Price: 4262.81 USD
Availability: BackOrder

$4262.81

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley BBC 615 4.625in Stroke x 4.600in Bore +43cc Piston Rotating Assembly. Supports up to 1500 HP.

Key Features

This rotating assembly includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
The crankshaft is forged from 4340 steel for robust performance.
Connecting rods are 4340 forged steel H-beam style with 7/16? ARP 8740 cap screws.
Pistons are 2618 forged aluminum Platinum Series.
Includes premium chrome moly wrist pins.
Rated for up to 900 horsepower with ARP 8740 cap screws.

This product is not CARB approved and cannot be shipped to California. Please consult manufacturer specifications for detailed fitment information.

⚠️ 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

This Manley rotating assembly includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins. This is a well-built package designed for serious engine builds where strength and reliability are paramount.

The crankshaft is forged from 4340 steel, offering a solid foundation for high-performance applications. The H-beam connecting rods are also forged from 4340 steel and come equipped with 7/16? ARP 8740 cap screws for secure fastening. For those pushing the limits, optional ARP 2000 cap screws are available to handle even greater stress. The pistons are forged from 2618 aluminum, a material known for its strength and ability to withstand high temperatures, and they come with premium chrome moly wrist pins for durability.

This assembly is rated for up to 900 horsepower when using the standard ARP 8740 cap screws. If you opt for the ARP 2000 cap screws, the assembly can support an impressive 1,500 horsepower. Please 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.