What components are included in this Manley rotating assembly?

This kit includes a 4340 forged steel crankshaft with a 3.750-inch stroke, 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.

What is the horsepower rating for this assembly?

The assembly is rated for up to 750 horsepower with the standard ARP 8740 cap screws. If you opt for the optional ARP 2000 cap screws, the rating increases to 1,500 horsepower.

Can this rotating assembly be shipped to California?

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

Specifications

Brand: Manley Performance
Part #: 290940H
UPC: 807298080345

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-t14-881152
Price: 3545.89 USD
Availability: BackOrder

$3545.89

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. Includes forged steel crank, H-beam rods, and forged aluminum pistons.

Key Features

This kit includes a lightweight 4340 forged steel crankshaft with a 3.750-inch stroke.
It also contains 4340 forged steel H-beam connecting rods fitted with 7/16-inch ARP 8740 cap screws.
The assembly comes with 2618 forged aluminum Platinum Series pistons and premium chrome moly wrist pins.
This rotating assembly is suitable for builds up to 750 horsepower with the standard ARP 8740 cap screws.
With optional ARP 2000 cap screws, the horsepower range is increased to 1,500.
This product is not CARB approved and cannot be shipped to California.

This rotating assembly is designed for Small Block Chevy (SBC) engines. Please verify compatibility with your specific engine block and build plans.

⚠️ 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 gives you a complete package for building a robust 383 cubic inch Small Block Chevy engine. Inside this kit, you'll find a lightweight 4340 forged steel crankshaft designed for a 3.750-inch stroke, a set of 4340 forged steel H-beam connecting rods, and 2618 forged aluminum pistons. The included pistons are Manley's Platinum Series, which come with premium chrome moly wrist pins.

The crankshaft is forged from 4340 steel, offering a strong foundation that's also lighter than cast alternatives, helping your engine rev more freely. The H-beam connecting rods are also forged from 4340 steel and come equipped with 7/16-inch ARP 8740 cap screws. If you plan on pushing your engine hard, you have the option to upgrade to ARP 2000 cap screws for even greater strength. This assembly is rated for up to 750 horsepower with the standard ARP 8740 bolts, and can handle up to 1,500 horsepower when equipped with the optional ARP 2000 cap screws.

This kit is intended for performance engine builds and is not CARB approved, meaning it cannot be shipped to California. Please consult your local emissions regulations before installation.