Engines and Components› Engines, Blocks and Components

Dart

SB Ford 4.125" Bore 3.40" Stroke Forged Piston Short Block Engine

$6,650.95

SKU: CNC-9440-ED

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In Stock
Ships by Jul 30
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Description

The Dart CNC-9440-ED is a short block engine designed for SB Ford applications. It features a Dart SHP block, an Eagle 4340 forged steel crankshaft with a 3.400-inch stroke, and Eagle H-Beam connecting rods with a length of 5.400 inches. The engine is equipped with JE forged -14cc dish pistons for a 4.125-inch bore.

This short block is internally balanced and includes high-performance plasma moly piston rings, ACL/Clevite 77 rod and main bearings, Dura Bond cam bearings, Dura Bond finishing kit, and brass freeze plugs. It also comes with a Victor rear main seal. The compression ratio varies depending on the combustion chamber volume: 10.4:1 for 56cc, 9.9:1 for 60cc, and 9.5:1 for 64cc.

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Specifications

BrandDart
Part NumberCNC-9440-ED
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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