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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.

2,739 topics in this forum

  1. 2017 5.3 ProCharged normal boost and e35

    By Gorske,
    • 9 replies
    • 2.6k views

  2. Modding my ProCharger kit!

    By Gorske,
    • 4 replies
    • 2k views

  3. 2017 5.3L...3.42 to 3.73 swap for towing?

    By BoilerUP,
    • 10 replies
    • 10.3k views

  4. Blackbear Tune vs Diablew Tune 1 2 3 4

    By Kerrslight,
    • 59 replies
    • 73.6k views

  5. 2018 GMC Denali swapping to 4.11 Gearing

    By DHeinze,   
    • 0 replies
    • 788 views

  6. Battery life 1 2

    By texasaggies16,
    • 18 replies
    • 2.2k views

  7. 2018 Sierra, How Many PCVs?

    By beerpilot,   
    • 3 replies
    • 1.7k views

  8. Which tuner for me?

    By migizi,
    • 6 replies
    • 863 views

  9. Drivetrain noise just developed

    By mongoose71,
    • 8 replies
    • 882 views

  10. Transmission slip!

    By Bennyl143,   
    • 8 replies
    • 3.7k views

  11. Best Tuner ??? 1 2 3 4

    By swollpatrol,
    • 53 replies
    • 36.7k views

  12. Loud clunk from transfer case

    By Richard P,
    • 4 replies
    • 2.9k views

  13. Hole in transmission???

    By Shepherdd81,
    • 8 replies
    • 16k views

  14. World Record??

    By Gorske,
    • 6 replies
    • 1.5k views

  15. 2015 Silverado moves after park on hill

    By Mosie33,
    • 4 replies
    • 960 views

  16. Best way to remove Corsa muffler intact?

    By 02SOMWS6,
    • 6 replies
    • 1k views

  17. 3.08 to 3.73 1 2

    By silveradosid,
    • 15 replies
    • 7.8k views

  18. Towing gears and tranny temps (repeat issue I know I know...)

    By Rob Featherstone,
    • 7 replies
    • 1.1k views

  19. Max Towing Weight?

    By btj_z71,   
    • 6 replies
    • 17.9k views

  20. GM Performance Cat Back Exhaust Muffler 1 2 3

    By Rubyralph,
    • 31 replies
    • 12.6k views

  21. New exhaust, no drone, no chopper, flapper relocate 1 2 3

    By Justin Nachazel,
    • 33 replies
    • 19.5k views

  22. Let's Talk Transmissions (Swaps & Modifications) 1 2

    By shaneman20,   
    • 18 replies
    • 23k views

  23. Corsa Sport or Touring???

    By steve76t,
    • 8 replies
    • 10.4k views

  24. . Question about GM Performance Cat back system

    By ringbuster,
    • 7 replies
    • 1.3k views

  25. AFE SCORCHER PRO Performance Programmer for Gas Engines - Anyone have it?

    By boseephuss,   
    • 3 replies
    • 7.1k views

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