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Engines & Drivetrain

Tech for the 5.3L (L83), 6.2L (L86), and 4.3L V6. Tuning and 6L80 / 8L90 transmission support.


2,728 topics in this forum

  1. FACTORY AIR BOX MODS

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  2. 4.11 gears 1 2 3 4

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  3. Volant intake

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  4. Step by step guide on a 2014 GMC Sierra 5.3 V8

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  5. VECI label

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  6. Replacement Battery Upgrade Options 1 2

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  7. TURBOCHARGER 1 2 3

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  8. Best Exhaust 1 2

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  9. I love the Range AFM

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  10. Catch Can Idea 1 2

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  11. Exhaust "Ping"

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