GM 400 AUTO 3-SPD

Name: GM 400 AUTO 3-SPD
Brand: ATK ENGINES
SKU: A040 T1623BA
Price: 2569.45 USD
Availability: InStock

$2,569.45

SKU: A040 T1623BA

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Description

This ATK LM7 (Iron LS1/LS6) based engine with CNC Ported Cathedral Port Aluminum heads produces 500HP and 450TQ, ideal for street performance. It can replace 1999-2007 Chevy 5.3L LM7 engines with modifications, or any other factory LS equipped vehicle. ECM tuning is required for optimal performance.

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Specifications

Brand	ATK ENGINES
Part Number	A040 T1623BA

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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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