Engines and Components› Engines, Blocks and Components

Eagle Specialty Products

383 CID Rotating Assembly Kit

$2,509.99

SKU: EAG12011030

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In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
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Overview

The Eagle Specialty Products EAG12011030 is a competition rotating assembly kit designed for Small Block Chevy engines. This kit features a forged 4340 steel crankshaft and 4340 H-Beam connecting rods with 7/16" ARP 8740 bolts. It includes forged pistons and is designed for a 3.750" stroke with a 4.030" bore, resulting in a 383 CID displacement.
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The Eagle Specialty Products EAG12011030 is a competition-grade rotating assembly kit engineered for Small Block Chevy engines. This comprehensive kit includes a robust forged 4340 steel crankshaft, providing superior strength and durability for high-performance applications. It is paired with 4340 H-Beam connecting rods, known for their strength and reliability under stress, and secured with 7/16" ARP 8740 rod bolts. This rotating assembly is configured for a 3.750-inch stroke and a 4.030-inch bore, resulting in a total engine displacement of 383 cubic inches (CID). This combination is a popular choice for builders seeking to increase displacement and power output from their Small Block Chevy engine. The kit is balanced, simplifying the installation process for engine builders. Eagle Specialty Products is known for producing quality internal engine components. Their competition assemblies are recommended for use in performance applications where reliability and strength are paramount. While the specific piston dish volume is not detailed here, the forged nature of the pistons indicates they are intended for boosted or high-compression builds.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandEagle Specialty Products
Part NumberEAG12011030
CategoryEngines and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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