Engines and Components Engines, Blocks and Components

ATK ENGINES

CHEV BW4401 TRANF CASE

$1,658.34

SKU: A040 X116-1

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Description

This is a high-performance ATK HP116 Chevy LM7 5.3L Base Engine, boasting 500HP and 440TQ. It's designed as a replacement for 2001-2007 Chevy 4.8L, 5.3L, and 6.0L engines. Key features include an OE LM7/5.3L Iron block, hypereutectic 10.1 compression pistons, a custom performance grind hydraulic roller camshaft, and AFR CNC ported aluminum cylinder heads. It requires proper upgrades, including ECM tuning and upgraded 36lb fuel injectors, to prevent engine damage and achieve stated power figures. Users are responsible for verifying component compatibility with their specific application, and some vehicle modifications may be necessary. ATK reserves the right to substitute parts.

Fitment

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Specifications

BrandATK ENGINES
Part NumberA040 X116-1

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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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