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Engines and Components› Engines, Blocks and Components

Dart

SHP 400 Short Block Engine Assembly

Name: SHP 400 Short Block Engine Assembly
Brand: Dart
SKU: CNC-9374-E

$5,869.42

SKU: CNC-9374-E

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$100 Minimum Order

Non-Returnable Item

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Professional / shop required

Overview

The Dart CNC-9374-E is a short block engine assembled with quality components. It features a Dart SHP block, an Eagle 4.000 forged steel crankshaft, and Eagle 6.0 H-beam stroker connecting rods. Mahle forged flat-top pistons are included, along with a high-performance plasma moly piston ring set. This engine is professionally machined, balanced, assembled, and blueprinted in-house by CNC-Motorsports.

Show original supplier description

The CNC Competition 427/434 Dart Short Block is an engine assembly designed for performance enthusiasts. It is built using a Dart SHP block and features a 4.000-inch stroke Eagle 4340 forged steel crankshaft paired with Eagle 6.0 H-beam stroker connecting rods, which are bushed for pins and equipped with ARP 8740 bolts. The assembly includes Mahle forged -5cc flat-top pistons and a high-performance plasma moly piston ring set. For reliable bearing performance, ACL/Clevite 77 rod and main bearings are utilized, along with Dura Bond cam bearings and a Dura Bond finishing kit. The short block also comes with brass freeze plugs, a Fel-Pro rear main seal, and is a standard bore unless otherwise noted. This short block engine is professionally machined, balanced, assembled, and blueprinted in-house by CNC-Motorsports. A balance card and blueprint sheet will be provided to the customer. The compression ratio with 64cc heads is 12.3:1. Options for customization are available, including ARP 2000 rod bolts, different Dart blocks (Little Sportsman or Little M), ARP main studs, coated main and rod bearings, piston oil squirters/cooling jets, roller cam bearings, and different lifter bore sizes. This engine is suitable for Power Adder or Marine applications.

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

Brand	Dart
Part Number	CNC-9374-E
Category	Engines 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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