Engines and Components› Pistons and Piston Rings

Eagle Specialty Products

Rotating Assembly 4.250" Stroke 4.155" Bore

$2,119.97

SKU: EAG524104155

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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 524104155 is a rotating assembly for Pontiac V8 engines. It features a cast crank, forged pistons, a 4.250 in stroke, 4.155 in bore, and 6.800 in I-beam rods.
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The Eagle Specialty Products 524104155 is a 461 CID rotating assembly designed for Pontiac V8 applications. This kit includes a cast crankshaft, forged pistons, 6.800 in I-beam rods, and features a 4.250 in stroke and 4.155 in bore. This rotating assembly requires balancing by a qualified machine shop before use to ensure optimal performance and longevity. It is specifically noted that this assembly is not compatible with 1976 Pontiac 400 blocks due to the presence of factory notches at the top of the cylinders.

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 NumberEAG524104155
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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