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 materials are the crankshaft, rods, and pistons made from?

The crankshaft and connecting rods are constructed from durable 4340 forged steel. The pistons are made from 2618 forged aluminum, part of Manley's Platinum Series, and include premium chrome moly wrist pins.

Is this rotating assembly balanced?

While this is a matched set of components, rotating assemblies typically require balancing by a professional engine builder to ensure optimal performance and longevity. Always refer to the manufacturer's installation guide for specific recommendations.

Specifications

Brand: Manley Performance
Part #: 38615RX
UPC: 807298093451

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-t14-881217
Price: 3905.93 USD
Availability: BackOrder

$3905.93

On Backorder

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Manley Rotating Assembly, BBC 615 4.625 STROKE/4.600/-3cc. Handles up to 1500 HP.

Key Features

Fits Big Block Chevrolet (BBC) engines.
Features a 4.625-inch stroke 4340 forged steel crankshaft.
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 horsepower capacity.
2618 forged aluminum Platinum Series pistons are included.
Comes with premium chrome moly wrist pins.

This rotating assembly is designed for Big Block Chevrolet (BBC) engines. Check manufacturer specifications to confirm compatibility with your specific engine block and 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

If you're building a serious big block Chevrolet engine and need a solid foundation for high horsepower, a complete rotating assembly is the way to go. This Manley Performance BBC 615 rotating assembly is designed to handle the demands of powerful builds, giving you a matched set of critical internal engine components from a well-known name in performance parts.

At the heart of this assembly is a 4340 forged steel crankshaft with a 4.625-inch stroke, paired with 4340 forged steel H-beam connecting rods. These rods come standard with 7/16-inch ARP 8740 cap screws, capable of supporting up to 900 horsepower. For those pushing the limits, you can opt for ARP 2000 cap screws, which raise the horsepower ceiling to a stout 1,500 HP. The pistons are forged from 2618 aluminum, part of Manley's Platinum Series, and include premium chrome moly wrist pins for durability under extreme stress.

This assembly is a complete package, meaning the crankshaft, connecting rods, and pistons are all designed to work together seamlessly. This saves you time and ensures proper balance and fitment, which is crucial for engine longevity and performance. Keep in mind 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 balancing procedures.