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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.

2,741 topics in this forum

  1. Catch can lines were reversed for 100 miles?

    By Payton34,
    • 1 reply
    • 1k views

  2. should I turn off AFM again after new lifters installed

    By Payton34,
    • 2 replies
    • 1.7k views

  3. Raybestos Element3 hybrid brake pads, anyone have experience?

    By columrick,
    • 7 replies
    • 27.8k views

  4. Replacing HPFP, need help finding TDC

    By NC_87,
    • 3 replies
    • 10.7k views

  5. 6L80 transmission failure - my rebuild experience

    By pixelmonkey,
    • 4 replies
    • 2.8k views

  6. Check engine, traction control lights and low power mode

    By Kbert1171,
    • 2 replies
    • 848 views

  7. Engine oil grades

    By Hendrikjan,
    • 7 replies
    • 1.9k views

  8. Differential for the snow

    By jim17,
    • 5 replies
    • 1k views

  9. Gear ratio calculator

    By Giggity231,
    • 9 replies
    • 1.8k views

  10. MBRP Exhaust

    By J.H.2015LT,
    • 13 replies
    • 2.4k views

  11. 2015 1500 - 5.3 Lifters Bad w/ Bad Cam

    By IDriveATruck,
    • 4 replies
    • 1.2k views

  12. slight rattle at cold start

    By GsBowtie,
    • 11 replies
    • 44.8k views

  13. Delete

    By Bryan Norman,
    • 0 replies
    • 793 views

  14. L83 and BTR Stage 3 Cam

    By Bryon1976,
    • 4 replies
    • 7.4k views

  15. Misfire cyl 7 but not collapsed lifter-Bad gas?

    By Payton34,
    • 3 replies
    • 1.2k views

  16. Factory L86 cam swap to L83 BTR cam. Is it possible, why would you do it?

    By KindalikeKane,
    • 13 replies
    • 12.3k views

  17. Drive Train Maintenance

    By IGG,
    • 2 replies
    • 1.4k views

  18. Should I do dod delete kit or just replace with AFM lifters

    By Payton34,
    • 2 replies
    • 7.7k views

  19. Bio-diesel for 2016 Duramax?

    By Mike Hamm,
    • 1 reply
    • 768 views

  20. P0420 p0430 Kooks Headers

    By Buddy B,
    • 1 reply
    • 1k views

  21. Good Transmission Builder in Indiana

    By dseef03,
    • 3 replies
    • 1.1k views

  22. 2014 Silverado transmission flush or drain? 1 2 3

    By GMcD,
    • 41 replies
    • 180.9k views

  23. Is anyone using Lucas Synthetic Oil Stabilizer in their 5.3 1 2

    By No Tyme,
    • 18 replies
    • 40.1k views

  24. Typical GM transmission problems rant/questions

    By Zayne Snyder,
    • 0 replies
    • 1.5k views

  25. P0420 (catalyst efficiency below threshold) code keeps coming back!

    By Guinnessmike,   
    • 4 replies
    • 16.6k views

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