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 750 horsepower. If you opt for the optional ARP 2000 cap screws, the rating increases to 1,500 horsepower.

What material are the pistons and connecting rods made from?

The pistons are forged from 2618 aluminum and feature a +11cc dome. The connecting rods are made from 4340 forged steel in an H-beam design.

Can this rotating assembly be shipped to California?

No, this rotating assembly is not CARB approved and cannot be shipped to California.

Specifications

Brand: Manley Performance
Part #: 290960RHX
UPC: 807298115498

Manley Rotating Assembly, SBC 383 3.750 STROKE/+11cc DOME

Name: Manley Rotating Assembly, SBC 383 3.750 STROKE/+11cc DOME
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-sbc-383-3-750-stroke-11cc-dome-t14-881164
Price: 3683.10 USD
Availability: BackOrder

$3683.10

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/+11cc DOME. Built for high-horsepower builds.

Key Features

Fits Small Block Chevy (SBC) engines.
Features a 3.750 inch stroke.
Includes 2618 forged aluminum pistons with a +11cc dome volume.
Comes with a lightweight 4340 forged steel crankshaft.
Equipped with 4340 forged steel H-beam connecting rods.
Connecting rods use 7/16? ARP 8740 cap screws, with an option for ARP 2000.

This rotating assembly is designed for Small Block Chevy (SBC) engines. It is not CARB approved and cannot be shipped 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

Manley Performance is well-known for making strong internal engine components. This 383 cubic inch rotating assembly is a prime example, built for serious performance builds where reliability is key. It includes a lightweight 4340 forged steel crankshaft, 4340 forged steel H-beam connecting rods, and 2618 forged aluminum pistons designed for a +11cc dome volume.

The crankshaft is forged from 4340 steel, offering a solid foundation for your engine's power. The H-beam connecting rods are also made from 4340 forged steel and come equipped with 7/16? ARP 8740 cap screws. If you're aiming for extreme power, you can opt for ARP 2000 cap screws for an even stronger connection, allowing this assembly to handle up to 1,500 horsepower. The included Platinum Series pistons are forged from 2618 aluminum and come with premium chrome moly wrist pins, contributing to their durability and lightweight design.

This assembly is designed for a 3.750-inch stroke and is not CARB approved, meaning it cannot be shipped to California. It's a robust option for builders looking to create a high-performance Small Block Chevy engine that can withstand significant power.