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Est. 1957
Manley Performance

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

$3479.01

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Manley Rotating Assembly, SBC 383 3.750 STROKE/+11cc DOME. Built for high-horsepower builds.

Key Features

  • Fits Small Block Chevy engines.
  • Features a 3.750 inch stroke crankshaft for 383 cubic inch displacement.
  • Includes lightweight 4340 forged steel crankshaft.
  • Comes with 4340 forged steel H-beam connecting rods with 7/16" ARP 8740 cap screws.
  • Optional ARP 2000 cap screws are available for increased horsepower capacity.
  • Includes 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
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

If you're building a high-performance Small Block Chevy engine and need a solid foundation, this Manley rotating assembly is a strong contender. It's designed to handle serious power, whether you're aiming for a street-strip monster or a dedicated race engine. This kit centers around a 3.750-inch stroke crankshaft, creating a 383 cubic inch displacement when paired with the correct bore size, offering a good balance of torque and RPM capability for many applications.

At the heart of this assembly is a Manley 4340 forged steel crankshaft, chosen for its strength and durability under high stress. Complementing the crank are Manley's 4340 forged steel H-beam connecting rods. These rods come standard with 7/16" ARP 8740 cap screws, which are well-suited for builds up to 750 horsepower. For those pushing the limits further, there's an option to upgrade to ARP 2000 cap screws, allowing the assembly to reliably handle up to 1,500 horsepower. The pistons are Manley's Platinum Series, made from 2618 forged aluminum for a good strength-to-weight ratio, and they include premium chrome moly wrist pins for added longevity.

This assembly is a significant step up from cast components, offering the robustness needed for demanding engine builds. Remember that this assembly is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed specifications and installation instructions to ensure proper assembly and to select any additional components needed for your specific build.

Specifications

Brand
Manley Performance
Manufacturer Part #
290940X
UPC
807298115474

Frequently Asked Questions

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

$3479.01