Engines and Components Engines, Blocks and Components

ATK ENGINES

LQ4 364CI 550HP L/B

$6,919.45

SKU: A040 LQ4-LB-2

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This ATK HP109 engine is a high-performance upgrade for LS-based vehicles or a perfect fit for a 2001-2007 Chevy Truck LQ4 or LS swap in a hot rod. It is designed to deliver big mid-to-upper end power with a noticeable idle. For optimal performance, headers, a chassis dyno tune, and 36lb injectors are recommended.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandATK ENGINES
Part NumberA040 LQ4-LB-2

Videos

Buy with Confidence

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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