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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.

6,733 topics in this forum

  1. 1999-2006 GM 1500 6YT and 7YT torsion bars where to buy?

    By gmcpoolman,
    • 0 replies
    • 358 views

  2. Supercharger for L9H 6.2?

    By ajensen383,
    • 13 replies
    • 13.7k views

  3. Front passenger side suspension clunk

    By jtdenali,
    • 3 replies
    • 816 views

  4. 4L80E hard shifting

    By Pdxchevyvan,
    • 1 reply
    • 719 views

  5. O2 sensors

    By anson carr,
    • 2 replies
    • 1.5k views

  6. Best front wheel hubs

    By Jim Lynch,
    • 3 replies
    • 2.1k views

  7. RAS for towing 8k lb?

    By cheapie408,
    • 0 replies
    • 445 views

  8. anyone get a tune on a 5.3? 1 2 3

    By quickvert1,
    • 38 replies
    • 133.9k views
    • Pal
    • Pal

  9. 6.6 L gas engine into 2008 sierra 1500 4 dr 4x4.

    By george trying to help,
    • 1 reply
    • 966 views

  10. 2006 GMC Sierra 1500 SLE 4wd transfer case problem

    By tanner0761,
    • 0 replies
    • 615 views

  11. 1995 Chevrolet 454 starts then stalls

    By J.c.,
    • 3 replies
    • 5.9k views

  12. 6L80 help needed!!!!

    By Dee Eastwood,
    • 3 replies
    • 1.1k views

  13. Wire connections for a S10 front diff swap

    By Roadstar01,
    • 0 replies
    • 758 views

  14. 2004 gmc yukon denali awd 6.0

    By LSX Ron,
    • 0 replies
    • 1.6k views

  15. New 16 sierra denali struts rubbing control arm

    By Josh B.,
    • 0 replies
    • 796 views

  16. Beefing up Axle/Diff

    By dillpickle,
    • 0 replies
    • 507 views

  17. Need help Diagnosing Transmission 2016 Silverado 1500 5.3/6L80E

    By TydeSurfer,
    • 1 reply
    • 828 views

  18. 8L90 Rebuild Q's

    By Dirty30,
    • 0 replies
    • 1.1k views

  19. I have a guestion on front disc brakes

    By davefra,
    • 0 replies
    • 784 views

  20. I need help

    By 03-SolidYukon,
    • 0 replies
    • 750 views

  21. 02 gmc Sierra 1500 4.8l to 6.0l 4l80e

    By Daniel_Reinke16,
    • 0 replies
    • 2.4k views

  22. Off Road Suspension Package

    By Scott Therrell,
    • 1 reply
    • 2.6k views

  23. Throttle cable

    By Fallon Rogers,
    • 0 replies
    • 1.3k views

  24. I need help

    By Ben Haase,
    • 0 replies
    • 1.3k views

  25. Changing from a 3.23 ratio to a 3.42 or bigger

    By Ratliff3,
    • 0 replies
    • 1.3k views

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