What is the horsepower limit for this rotating assembly?

With the standard 7/16? ARP 8740 cap screws on the connecting rods, this assembly is rated for up to 750 horsepower. If you opt for the ARP 2000 cap screws, the horsepower limit increases to 1,500 HP.

What compression ratio can I expect with these pistons?

The included pistons are a -15cc dish volume. The final compression ratio will depend on your cylinder head volume, deck height, and head gasket thickness. It's designed to help achieve a desired compression ratio for performance builds.

What is included in this rotating assembly?

This assembly includes a 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods with ARP 8740 cap screws, and 2618 forged aluminum Platinum Series pistons with Premium Chrome Moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 290040RH
UPC: 807298080017

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-t14-881115
Price: 3504.96 USD
Availability: BackOrder

$3504.96

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, SBC 383 3.750 STROKE/-15cc DISH. A well-built rotating assembly for serious engine builds.

Key Features

Fits Small Block Chevy (SBC) engines with a 383 cubic inch displacement and 3.750-inch stroke.
Includes 2618 forged aluminum Platinum Series pistons with -15cc dish volume.
Features a lightweight 4340 forged steel crankshaft for strength and reduced rotational mass.
Comes with 4340 forged steel H-beam connecting rods equipped with 7/16? ARP 8740 cap screws.
Capable of handling up to 750 horsepower with the standard ARP 8740 cap screws.
Can support up to 1,500 horsepower when fitted with optional ARP 2000 cap screws.

This rotating assembly is designed for Small Block Chevy (SBC) engines with a 383 cubic inch displacement and a 3.750-inch stroke. It is not CARB approved and cannot ship to California.

⚠️ 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 high-performance Small Block Chevy engine and aiming for serious power, a robust rotating assembly is the heart of your build. This Manley rotating assembly is designed for the 383 cubic inch displacement with a 3.750-inch stroke, featuring -15cc dish pistons to help achieve your desired compression ratio. It's a well-built foundation for engines targeting up to 1,500 horsepower.

At its core is a lightweight 4340 forged steel crankshaft, chosen for its strength and ability to handle high RPMs. Paired with this are 4340 forged steel H-beam connecting rods. These rods come standard with 7/16? ARP 8740 cap screws, a solid choice for builds up to 750 horsepower. For those pushing the limits, optional ARP 2000 cap screws are available, allowing the assembly to safely handle up to 1,500 horsepower. The pistons are Manley's Platinum Series, made from 2618 forged aluminum for durability and featuring Premium Chrome Moly wrist pins.

This assembly is a significant upgrade for any performance engine project. Please note that this part is not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and torque specifications.