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Engines & Drivetrain (V8, Duramax, TurboMax)

Technical discussion for the 6.2L (L87), 5.3L (L84), 3.0L Duramax (LZ0/LM2), and 2.7L TurboMax. Tuning, maintenance, and 8-speed &10-speed transmission tech.

1,140 topics in this forum

  1. 2.7L Intake,Exhaust, and tune/programmer

    By Amitchell,
    • 4 replies
    • 5.7k views

  2. 8l90 transmission working temp

    By Giantpeaches,
    • 13 replies
    • 19.3k views

  3. Whats the wheel hp and torque of the 5.3 and 6.2? 1 2

    By Anon12345,
    • 24 replies
    • 42.2k views

  4. Corsa vs. Borla on a 6.2...

    By Badbird2000,
    • 4 replies
    • 9.1k views

  5. RCA Garage?

    By Bigfoot16,
    • 8 replies
    • 15.5k views

  6. Sloppy 2.7 oil change 1 2

    By Acpantera,
    • 15 replies
    • 9.9k views

  7. How far on bad lifters?

    By AirForceAngler,
    • 9 replies
    • 2.3k views

  8. 6.2 l87 engine, where to find build date for the engine?

    By Anon12345,
    • 3 replies
    • 9.5k views

  9. Another Flapper Valve Question

    By 70rsss,
    • 13 replies
    • 5k views

  10. GM Performance Exhaust- Borla ATAK Conversion

    By AT4Play,
    • 4 replies
    • 3.3k views

  11. 20 Sierra 6.2L rear main seal leak for the 4th time. 1 2

    By LilBean1982,
    • 23 replies
    • 25.4k views

  12. *Oil Leak* 1 2

    By NotoriousGT350,
    • 17 replies
    • 12.1k views

  13. 3.0 oil pressure

    By Jrodpic,
    • 6 replies
    • 19.1k views

  14. 2021 Chevy Silverado TrailBoss Exhaust Noise

    By Jarid Ashman,   
    • 9 replies
    • 18k views

  15. 6.2 V8

    By A muz,
    • 8 replies
    • 2.6k views

  16. Yet another DFM thread, disable with GDS2???

    By Blanz,
    • 1 reply
    • 4.2k views

  17. Ordering new Truck, 3.23 vs 3.42

    By buddyrda,
    • 9 replies
    • 16.3k views

  18. Trim level differences on updated 2022 GMC Sierra 1500 interiors

    By gone_fishing,
    • 2 replies
    • 5.5k views

  19. 2022 Silverado 1500 6.2 Muffler Delete With Bullet Style Mufflers In Tailpipes Replacing The Resonators

    By anthony malet,
    • 1 reply
    • 2.7k views

  20. Duramax 3.0: oil consumption and oil changes 1 2

    By William Richardson,   
    • 21 replies
    • 48.1k views

  21. Trading in 2019 RST 5.3/8speed for a 2022 RST 3.0/10speed Wise Choice?

    By papasink,
    • 3 replies
    • 1.5k views

  22. 2020 sierra 3.0l emission fault

    By Gwat1988,
    • 0 replies
    • 867 views

  23. Any lifter failures in 5.3 without DFM 1 2 3 4

    By Nutmeg,
    • 48 replies
    • 46.2k views

  24. Exhaust Pipe

    By Tuktuk,
    • 6 replies
    • 1.4k views

  25. 2021 3.0 regeneration exhaust

    By rbdjr,
    • 3 replies
    • 5.3k views
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