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Eagle Chevy 350 Street & Strip Rotating Assembly 3.750in. Stroke 4.030in. Bore

Eagle
EAGB15405E030
In stock
Rotating Assemblies
$1,437.99
Features & Benefits 3.750" Cast Crankshaft – Ensures reliable performance with optimized external balance for smooth...
$1,437.99

customers are viewing this product
Eagle Chevy 350 Street & Strip Rotating Assembly 3.750in. Stroke 4.030in. Bore

Features & Benefits

  • 3.750" Cast Crankshaft – Ensures reliable performance with optimized external balance for smooth operation.

  • 5.700" Forged I-Beam Rods – Durable, strong rods for high-performance and high-RPM applications.

  • Hypereutectic KB -5cc Flat-Top Pistons (4.030" Bore) – Provides great compression while reducing the risk of detonation.

  • Plasma-Moly Standard Gap Rings – Excellent sealing performance for longevity and reliability.

  • King SI Rod/Main Bearings – Precision-engineered bearings for superior durability.

  • 3/8" ARP 8740 Rod Bolts – High-strength bolts that ensure long-lasting, secure connections.

  • Pioneer Damper & 168-Tooth Flexplate – Adds external balance for smoother operation and compatibility with automatic transmissions.

  • Complete, Pre-Balanced Kit – Ready to install with minimal clearance issues.


Specifications

Specification Details
SKU / Part Number EAGB15405E030
Engine Compatibility Chevrolet 350 Small Block
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
Damper Included Yes
Flexplate Included 168 Teeth
Stroke 3.750"
Approximate Package Weight 60 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.

  • Minor pan rail clearancing may be required for proper fitment.

  • Best suited for naturally aspirated applications, but can also be used for mild forced induction builds with additional supporting modifications.


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

  • Pioneer Damper

  • 168-Tooth Flexplate

  • Approximate Kit Weight: 60 lbs

REVIEWS

C W

I used this kit to build a street/strip motor for my '69 Camaro. The quality is excellent, and I love that it came pre-balanced. Engine fired right up, and I've already seen a noticeable improvement in power.

Chris W.

Dallas, TX

★★★★★
D P

This Eagle rotating assembly is a great value. I was able to upgrade my stock 350 without breaking the bank. The pistons, rods, and crank are solid, and the assembly went together smoothly. Highly recommend for anyone doing a budget build!

David P.

Atlanta, GA

★★★★★
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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
Returns sent without prior authorization will not be accepted.

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

Return Shipping Address
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
931 W. Bardin Rd., Suite 150–200
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

Damages and Issues
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.

Exceptions / Non-Returnable Items
Certain items cannot be returned, including:
• 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.

Exchanges
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.

Refunds
We will notify you once we receive and inspect your return to inform you whether your refund is approved. If approved, you will be automatically refunded using your original payment method within 10 business days. Please be aware that it may take additional time for your bank or credit card company to process and post the refund.

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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