Engines and Components› Crankshafts and Components

Eagle Specialty Products

3.750-inch Stroke Cast Crankshaft Kit

$1,380.55

SKU: EAGB15404L03068

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

This kit features a cast crank with a 3.750-inch stroke and 4.030-inch bore, paired with 5.700-inch I-beam rods. It includes hypereutectic pistons and is FP balanced with a 168-tooth count. Eagle Specialty Products is known for producing quality engine parts, using state-of-the-art equipment and skilled craftsmen to ensure their components are suitable for demanding applications.
Show original supplier description
This kit is specifically designed for 383 CID applications and features a durable cast crankshaft with a 3.750-inch stroke and a 4.030-inch bore. Complementing the crankshaft are 5.700-inch I-beam connecting rods, which offer a reliable connection for increased power output. This assembly includes hypereutectic pistons, known for their strength and thermal properties, contributing to overall engine efficiency and longevity. The kit is also FP balanced with a 168-tooth count, ensuring proper rotational dynamics and reducing vibration. Eagle Specialty Products emphasizes quality, utilizing advanced equipment and skilled labor to produce engine components that meet the demands of both street performance and weekend racing applications. Eagle Specialty Products has established itself as a significant manufacturer in the aftermarket connecting rod industry by consistently focusing on quality without compromising on price. Their comprehensive inspection and quality control processes ensure that every part is suitable for the most demanding engine builds, making this rotating assembly a reliable choice for engine enthusiasts.

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 NumberEAGB15404L03068
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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