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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. Loud clunk from transfer case

    By Richard P,
    • 4 replies
    • 2.9k views

  2. Hole in transmission???

    By Shepherdd81,
    • 8 replies
    • 15.7k views

  3. World Record??

    By Gorske,
    • 6 replies
    • 1.5k views

  4. 2015 Silverado moves after park on hill

    By Mosie33,
    • 4 replies
    • 952 views

  5. Best way to remove Corsa muffler intact?

    By 02SOMWS6,
    • 6 replies
    • 1k views

  6. 3.08 to 3.73 1 2

    By silveradosid,
    • 15 replies
    • 7.7k views

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

    By Rob Featherstone,
    • 7 replies
    • 1.1k views

  8. Max Towing Weight?

    By btj_z71,   
    • 6 replies
    • 17.3k views

  9. GM Performance Cat Back Exhaust Muffler 1 2 3

    By Rubyralph,
    • 31 replies
    • 12.5k views

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

    By Justin Nachazel,
    • 33 replies
    • 19.4k views

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

    By shaneman20,   
    • 18 replies
    • 22.9k views

  12. Corsa Sport or Touring???

    By steve76t,
    • 8 replies
    • 10.4k views

  13. . Question about GM Performance Cat back system

    By ringbuster,
    • 7 replies
    • 1.3k views

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

    By boseephuss,   
    • 3 replies
    • 7.1k views

  15. LS Engine swap into GM 2014-2018 1500 Truck 1 2 3

    By ChevyRoofer,   
    • 30 replies
    • 89.2k views

  16. Engine swap v6 to v8

    By Andy_760,
    • 3 replies
    • 11k views

  17. 2016 Silverado intake manifold.

    By a2z.rayw,
    • 10 replies
    • 1.8k views

  18. 2015 1500 50k mile service 1 2

    By hondarider94,
    • 28 replies
    • 3.5k views

  19. Leaf Spring Bolt Torque 2015 Silverado 1500 5.3

    By jackgraves,
    • 5 replies
    • 9.4k views

  20. 2Piece Driveshaft Swap Guys

    By DenisTheMenace,
    • 1 reply
    • 800 views

  21. TruXP Programmer

    By jakobkindt,
    • 2 replies
    • 1k views

  22. 5.3 Exhaust Suggestions 1 2

    By Rally_18,
    • 23 replies
    • 3.6k views

  23. Edelbrock Supercharger on 5.3

    By glairbear,   
    • 10 replies
    • 4.6k views

  24. 5.3L (L83) Dyno Results

    By btj_z71,   
    • 1 reply
    • 5.8k views

  25. 17-18 Sierra 6.2 Denali Cutout

    By CodyB,   
    • 2 replies
    • 5.1k views

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