Engines and Components› Engines, Blocks and Components

Eagle Specialty Products

383 CID Rotating Assembly

$1,185.99

SKU: EAGB15454L03068

In Stock
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 B15454L03068 is a balanced street performance rotating assembly for Chevrolet 383 engines with a 1-piece rear main seal. It features a cast iron crankshaft and hypereutectic aluminum pistons. This kit includes Eagle "SIR" I-beam connecting rods, Silv-O-Lite claimer pistons, Perfect Circle rings, and Performance Street bearings.
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The Eagle Specialty Products B15454L03068 is a balanced street performance rotating assembly designed to provide a robust combination of strength, performance, reliability, and affordability. This kit is engineered for engines up to 500 hp and is ideal for pump gas, naturally aspirated, street applications. The assembly includes a cast iron crankshaft with a 3.750-inch stroke and a 4.030-inch bore, accommodating a 6.3L/383 cubic inch displacement. The pistons are made from hypereutectic aluminum and feature a dish style with no valve reliefs, and come in a +12.00cc volume. The connecting rods are Eagle "SIR" I-beam forged 5140 steel with a length of 5.700 inches center-to-center. The kit is pre-balanced and utilizes a 1-piece rear main seal. This comprehensive kit comes with pistons, piston rings (Plasmamoly facing), connecting rods, rod bearings, main bearings, and a flexplate. However, it does not include a harmonic balancer, flywheel, cam bearings, gaskets, oil pump, camshaft, lifters, or timing chain and gears. The wrist pin style is press-fit or floating, and the pistons and rings are supplied at a 0.030 in. oversize.

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 NumberEAGB15454L03068
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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