Engines and Components› Engines, Blocks and Components

ATK ENGINES

GM 2004R AUTO 4-SPD

$3,013.89

SKU: A040 T1370AA

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INSTALL DIFFICULTY
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Description

This ATK Engines HP109 is a remanufactured high-performance Chevy 6.0L LQ4 crate engine, designed for 2001-2007 Chevrolet trucks. It delivers over 500HP and 480TQ, making it suitable for performance upgrades or as a robust replacement. The engine features a custom performance grind hydraulic roller camshaft, hypereutectic pistons with 10:1 compression, and OE cathedral port aluminum cylinder heads. It requires headers, a chassis dyno tune, 36lb injectors, and ECM tuning for optimal performance and to prevent damage. This engine is a direct replacement for the 2001-2007 Chevy 6.0L LQ4 engine.

Fitment

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Specifications

BrandATK ENGINES
Part NumberA040 T1370AA

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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