Engines and Components› Engines, Blocks and Components

Eagle Specialty Products

357 CID Rotating Assembly Kit

$1,603.97

SKU: EAG13021040

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
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Overview

The Eagle Specialty Products 13021040 is a rotating assembly kit designed for Small Block Chevy engines. This kit features a 357 CID displacement, a cast crank, and forged pistons. It includes I-beam connecting rods with a 5.700-inch length, a 3.480-inch stroke, and a 4.040-inch bore.

Eagle Specialty Products utilizes state-of-the-art equipment and skilled craftsmen to produce their engine parts. The company emphasizes quality control and inspection for all rods and crankshafts, ensuring they meet demanding application requirements. This specific kit is suitable for weekend racers.
Show original supplier description
The Eagle Specialty Products 13021040 is a rotating assembly kit specifically engineered for Small Block Chevy engines. The assembly features a 357 CID displacement, a durable cast crankshaft, and high-strength forged pistons. It includes 5.700-inch I-beam connecting rods, complementing the 3.480-inch stroke and 4.040-inch bore dimensions for optimized engine performance. Eagle Specialty Products is recognized as the largest aftermarket connecting rod manufacturer globally, committed to uncompromising quality. They employ advanced equipment and skilled artisans to produce every part, with rigorous inspection and quality control processes ensuring suitability for demanding applications. This particular kit utilizes quality cast steel cranks and I-beam rods, making it a robust choice for performance builds. It is crucial to note that this assembly must be professionally balanced by a qualified machine shop prior to installation and use to ensure proper function and longevity.

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.

Fitment

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Specifications

BrandEagle Specialty Products
Part NumberEAG13021040
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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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