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Eagle Chevy 350 2Pc 3.750in Crank 5.700in I-Beam Rod -5cc Flat Top 4.030in Pistons Balanced Assembly

Eagle
EAGB15455E030
In stock
Rotating Assemblies
$1,290.99
Features & Benefits 3.750" Cast Crankshaft – External balance for smooth operation and high-rev reliability. 5.700"...
$1,290.99

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Eagle Chevy 350 2Pc 3.750in Crank 5.700in I-Beam Rod -5cc Flat Top 4.030in Pistons Balanced Assembly

Features & Benefits

  • 3.750" Cast Crankshaft – External balance for smooth operation and high-rev reliability.

  • 5.700" Forged I-Beam Rods – Excellent strength and precision for high-RPM durability.

  • Hypereutectic KB -5cc Flat-Top Pistons (4.030" Bore) – High compression for better power output while reducing detonation risks.

  • Plasma-Moly Rings – Ensures a reliable seal for extended engine life.

  • King SI Rod/Main Bearings – Superior bearing materials for long-lasting performance.

  • 3/8" ARP 8740 Rod Bolts – High-strength bolts that keep your assembly secure under high stress.

  • Complete, Pre-Balanced Kit – All components are balanced for easy installation and smooth operation.


Specifications

Specification Details
SKU / Part Number EAGB15455E030
Engine Compatibility Chevrolet 350 Small Block (2-Piece Rear Main Seal)
Crank Type Cast, External Balance
Rod Length 5.700"
Rod Material Forged 5140 Steel I-Beam
Rod Bolts 3/8" ARP 8740
Piston Type Hypereutectic KB, -5cc Flat-Top
Piston Bore 4.030"
Piston Pin Type Full floating, .927" diameter
Ring Type Plasma-Moly, Standard Gap
Bearing Type King SI Rod/Main Bearings
Stroke 3.750"
Approximate Package Weight 55 lbs
Ideal Use Naturally aspirated street/strip builds (400-500 hp)

Fitment Notes

  • Designed for Chevy 350 small block engines with a 2-piece rear main seal.

  • May require slight pan rail clearancing for optimal fit.

  • Best suited for naturally aspirated applications or mild forced induction setups with proper supporting mods.


What’s Included

  • Cast Crankshaft (3.750" Stroke, External Balance)

  • Forged 5.700" I-Beam Rods (with ARP 8740 3/8" rod bolts)

  • Hypereutectic KB -5cc Flat-Top Pistons (4.030" bore)

  • Plasma-Moly Rings (Standard Gap, File-Fit)

  • King SI Rod & Main Bearings

  • Approximate Kit Weight: 55 lbs

REVIEWS

B S

I used this rotating assembly for my '77 Chevy pickup, and it made a huge difference in performance. The balance is spot-on, and everything went together smoothly. Would recommend for any serious build!

Brian S.

Houston, TX

★★★★★
J T

I bought this kit for a street/strip project and couldn’t be happier. The rods and pistons are top-quality, and the kit was pre-balanced, so installation was a breeze. My engine now has the power and reliability I was looking for.

James T.

Phoenix, AZ

★★★★★
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Effective Date: October 2024
We offer a 30-day return policy, allowing you to request a return within 30 days of receiving your item. To qualify for a return, the item must be in its original condition—unused, with tags, and in its original packaging. A receipt or proof of purchase is also required.

To initiate a return, please contact us at info@riotparts.com. Returns must be shipped to the address provided upon request. If your return is approved, we will issue a return shipping label along with detailed instructions.

Important
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For any return-related inquiries, please reach out to us at info@riotparts.com.

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The return shipping address will be determined based on the requestor’s location to ensure the nearest return facility is used.

Possible return locations include:
10880 Lear Blvd.
Reno, NV 89506, United States
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Arlington, TX 76017, United States
3035 Campus Dr.
Hatfield, PA 19440, United States
5789 N. Graham Road, Ste 200
Whiteland, IN 46184, United States
2020 NE Aloclek Dr 4711 N Lamon Ave
#118 STE 12, Hillsboro, OR 97124, United States

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We recommend inspecting your order upon receipt. If you find that an item is defective, damaged, or if you received the wrong item, please contact us immediately so we can address the issue.

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• Electrical parts that have been installed or used
• Special order parts that were custom ordered for you
• Items that have been damaged due to improper installation or use

If you have questions or concerns about a specific item, please contact us for assistance.

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For exchanges, the quickest option is to return the item you have. Once the return is accepted, you can make a separate purchase for the new item.

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If more than 15 business days have passed since your return was approved and you haven’t received your refund, please contact us at info@riotparts.com.

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