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Advanced Drivetrain, Suspension & Tuning

Deep dives into mechanical theory. Gear swaps, transmission rebuilding, solid axle swaps (SAS), and HP Tuners / ECU calibration.

6,735 topics in this forum

  1. 4L65E rebuild/replacement options and cost?

    By mackguy,
    • 0 replies
    • 2.1k views

  2. Tahoe lift

    By RickRoc,
    • 0 replies
    • 719 views

  3. 4l60e swap question

    By Dmcustomz,
    • 1 reply
    • 1k views

  4. Leveling Kit And Tire Size 1 2 3 4

    By Redneck56,
    • 45 replies
    • 41.6k views

  5. Finally Took the BlackBear plunge 1 2 3 4

    By tazerbro,
    • 54 replies
    • 75.6k views

  6. Anyone done a 9 inch mcgaughy lift and a 3 inch body lift?

    By Willyp1992,   
    • 0 replies
    • 2.8k views

  7. Torsion bar direction

    By Kytruck,   
    • 0 replies
    • 3.9k views

  8. 04 3500 4l80e problem

    By regcab02HD,
    • 0 replies
    • 1.7k views

  9. horsepower ratings

    By jerboy,   
    • 4 replies
    • 2.5k views

  10. GM 6l45, 6l50, 6l80, 6l90 transmission info needed

    By cxcad,
    • 1 reply
    • 3k views

  11. Shudder/fast bounce

    By GMjoe,
    • 5 replies
    • 1.1k views

  12. Grade Braking

    By Kootenay Herb,
    • 3 replies
    • 1.2k views

  13. Borla XR-1 Muffler 2011 2500HD

    By Jim80,
    • 0 replies
    • 1.2k views

  14. Installing an 8l90e behind an LY6

    By rmarles,
    • 2 replies
    • 2.6k views

  15. Virginia Dealership / 3weeks into transmission rebuild / no end in sig 1 2

    By glenn3564,   
    • 17 replies
    • 2.5k views

  16. Supercharged 2015 Silverado 1 2

    By hotrodder701,   
    • 15 replies
    • 12.7k views

  17. Need help!! Horrible noises from front drive line

    By Havoc,
    • 0 replies
    • 727 views

  18. 2007 hd 3500 transfer case

    By johnnyg123,
    • 4 replies
    • 1.1k views

  19. 10 bolt rebuild questions 1993 Chevy blazer K1500

    By zack.cole.52012,
    • 0 replies
    • 731 views

  20. Suspension upgrades

    By Z71_Tommy,
    • 1 reply
    • 1.1k views

  21. Leveling Kit VS Lift Kit

    By xugz0212,
    • 2 replies
    • 1.1k views

  22. 2007 GMC Sierra 1500 4wd Shift Issue

    By Boomer Coleman,
    • 0 replies
    • 738 views

  23. New to this

    By Cell2011,
    • 1 reply
    • 1.1k views

  24. Suburban 4 pin transfer case into 04 silverado ... help

    By brandon0426,
    • 0 replies
    • 737 views

  25. Help figuring out this supercharge

    By Speedevil,   
    • 7 replies
    • 2k views

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