What is the horsepower rating for this rotating assembly?

With the standard 7/16-inch ARP 8740 cap screws, this assembly is rated for up to 750 horsepower. If you opt for the upgrade to ARP 2000 cap screws, the horsepower range increases to 1,500.

What is the purpose of the -15cc dish in the pistons?

The -15cc dish in the pistons helps to control the compression ratio of your engine. This specific dish volume is designed to work with the 3.750-inch stroke and other components to achieve a particular target compression, often for high-performance applications.

What is included in this Manley rotating assembly?

This assembly typically includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with ARP fasteners, and 2618 forged aluminum pistons with wrist pins. It's a complete set of the core rotating components.

Specifications

Brand: Manley Performance
Part #: 290030RH
UPC: 807298079974

Manley Rotating Assembly, SBC 383 3.750 STROKE/-15cc DISH

Name: Manley Rotating Assembly, SBC 383 3.750 STROKE/-15cc DISH
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-sbc-383-3-750-stroke-15cc-dish-t14-881100
Price: 3504.96 USD
Availability: BackOrder

$3504.96

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Manley Performance SBC 383 rotating assembly with a 3.750" stroke and -15cc dish pistons. Built for high-horsepower builds.

Key Features

Fits Small Block Chevy (SBC) engines with a 3.750-inch stroke.
Includes 2618 forged aluminum Platinum Series pistons with -15cc dish.
Features a lightweight 4340 forged steel crankshaft for strength and reduced rotational mass.
Comes with 4340 forged steel H-beam connecting rods.
Connecting rods include 7/16-inch ARP 8740 cap screws, supporting up to 750 horsepower.
Optional ARP 2000 cap screws are available for connecting rods, supporting up to 1,500 horsepower.

This rotating assembly is designed for Small Block Chevy (SBC) engines. Please consult 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

This Manley rotating assembly starts with a lightweight 4340 forged steel crankshaft, chosen for its strength and ability to handle high RPMs without excessive weight. It's designed for Small Block Chevy (SBC) engines and features a 3.750-inch stroke, paired with -15cc dish pistons to achieve a specific compression ratio for your build. This combination is a popular choice for those looking to build a potent 383 cubic inch stroker engine.

The connecting rods are also made from robust 4340 forged steel in an H-beam design, known for its excellent strength-to-weight ratio. They come standard with 7/16-inch ARP 8740 cap screws, a solid choice capable of handling up to 750 horsepower. For those pushing the limits even further, there's an option to upgrade to ARP 2000 cap screws, which can support an impressive 1,500 horsepower. The pistons are 2618 forged aluminum from Manley's Platinum Series, featuring Premium Chrome Moly wrist pins for durability under extreme stress.

When assembling a high-performance engine, the rotating assembly is the heart of the operation. This Manley package provides a well-built foundation that balances strength, weight, and the capacity for significant power output. Remember that this assembly is not CARB approved and cannot be shipped to California. Always consult your engine builder or a qualified professional for specific installation and tuning recommendations to match your vehicle's needs.