Specifications
- Brand
- Manley Performance
- Part #
- 290140H
- UPC
- 807298080062

Manley Rotating Assembly, SBC 383 3.750 STROKE/-4cc FLAT
$3384.88
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Manley Rotating Assembly, SBC 383 3.750 STROKE/-4cc FLAT. Built for high-horsepower builds up to 1500 HP.
Key Features
- Fits Small Block Chevy (SBC) engines with a 383 cubic inch displacement.
- Features a lightweight 4340 forged steel crankshaft with a 3.750-inch stroke.
- Includes 2618 forged aluminum Platinum Series pistons with premium chrome moly wrist pins.
- Comes with 4340 forged steel H-beam connecting rods.
- Standard configuration uses 7/16-inch ARP 8740 cap screws, rated for up to 750 horsepower.
- Optional ARP 2000 cap screws are available, increasing the horsepower rating to 1,500 HP.
⚠️ 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
Product Details
Starting with a lightweight 4340 forged steel crankshaft is key for a robust engine build. This Manley rotating assembly is designed for Small Block Chevy (SBC) engines, specifically configured for a 383 cubic inch displacement with a 3.750-inch stroke. The -4cc flat-top pistons are a solid choice for many performance applications, offering a good balance for compression ratios when paired with appropriate cylinder heads.
You'll find 4340 forged steel H-beam connecting rods included, which are known for their strength and reliability under stress. These rods come standard with 7/16-inch ARP 8740 cap screws, a well-regarded fastener for performance engines. For those pushing the limits, there's an option to upgrade to ARP 2000 cap screws, which significantly increases the horsepower handling capability of the assembly. The 2618 forged aluminum Platinum Series pistons are also a strong point, paired with premium chrome moly wrist pins for durability.
This assembly is rated for up to 750 horsepower with the standard ARP 8740 fasteners, but stepping up to the optional ARP 2000 cap screws raises that ceiling to an impressive 1,500 horsepower. This makes it a versatile option for a wide range of performance builds, from a strong street engine to a serious race application. Please note that this assembly is not CARB approved and cannot be shipped to California. Always consult with your engine builder to ensure this assembly meets your specific build requirements.
Specifications
- Brand
- Manley Performance
- Manufacturer Part #
- 290140H
- UPC
- 807298080062
Frequently Asked Questions
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Manley Rotating Assembly, SBC 383 3.750 STROKE/-4cc FLAT
