Engines and Components› Engines, Blocks and Components

Speedmaster

383ci Rotating Assembly, 3.75" Stroke, 2-Piece Rear Main

$880.00

SKU: PCE290.1146

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In Stock
Ships by Jul 29
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Description

The Speedmaster PCE290.1146 is an engine rotating kit designed for Chevy SBC 350 engines. It features a 3.750-inch stroke and a 4.030-inch bore, creating a 383ci displacement.

This kit utilizes a 2-piece rear main seal. The connecting rods have a one-rib cap design for enhanced strength and bearing support, with polished beams to minimize stress risers.

Fitment

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Specifications

BrandSpeedmaster
Part NumberPCE290.1146
CategoryEngines and Components

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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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