What is the horsepower limit for this rotating assembly?

With the included ARP 8740 cap screws on the connecting rods, this assembly is rated for up to 750 horsepower. If you opt for the upgrade to ARP 2000 cap screws, the assembly can support builds up to 1,500 horsepower.

What is the stroke and piston dome volume?

This rotating assembly features a 3.750-inch stroke. The included pistons have a +11cc dome volume, which will affect your final compression ratio depending on your cylinder head volume and block deck height.

Specifications

Brand: Manley Performance
Part #: 290930HX
UPC: 807298115368

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-t14-881137
Price: 3563.16 USD
Availability: BackOrder

$3563.16

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 up to 1,500 HP with optional ARP 2000 fasteners.

Key Features

Fits SBC engines with a 3.750 inch stroke and +11cc dome pistons.
Features a lightweight 4340 forged steel crankshaft for durability.
Includes 4340 forged steel H-beam connecting rods with 7/16" ARP 8740 cap screws.
Capable of supporting up to 750 horsepower with standard ARP 8740 fasteners.
Optional ARP 2000 cap screws can support builds up to 1,500 horsepower.
Comes with 2618 forged aluminum Platinum Series pistons and Premium Chrome Moly wrist pins.

This rotating assembly is designed for SBC (Small Block Chevrolet) engines. Please consult manufacturer specifications to ensure 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

Starting with the crankshaft, this Manley rotating assembly features a lightweight 4340 forged steel unit designed for a 3.750-inch stroke, forming the heart of your SBC 383 build. This robust construction is key to handling the stresses of high-performance engines.

Complementing the crankshaft are 4340 forged steel H-beam connecting rods. These rods come equipped with 7/16-inch ARP 8740 cap screws, offering a solid foundation for builds up to 750 horsepower. For those pushing the limits further, an upgrade to optional ARP 2000 cap screws is available, supporting builds up to a remarkable 1,500 horsepower. The assembly also includes 2618 forged aluminum Platinum Series pistons, featuring a +11cc dome and Premium Chrome Moly wrist pins, ensuring a well-matched and durable piston for your engine combination.

This rotating assembly is a serious consideration for anyone rebuilding or building a high-output small-block Chevrolet. It's important to note 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 torque specifications.