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  1. #1

    Default exhaust manifold gaskets . replaced and now still leak.. help?

    over the winter i replace the exhaust manifold gaskets but not the manifold on my 01 2500hd 6.0 vortec.. they were fine until recently started leaking again . i checked all the bolts and they are tight .. is it possible the manifolds are warped or something ? Im willing to install new gaskets and manifolds is there a good brand of gaskets that might eliminate that annoying exhaust leak? or is there a trick to getting them to seal perfectly ? please help this is driving me insane ..
    2001 Gmc Sierra 2500hd
    -All clear lights with 5000k HID -Spectre cold air intake w/ k&n cone -Cooper dicoverer ST Maxx 285/75/16 -Meyer 7.5ft poly plow E60 pump - 3500 Rear springs-Leveling kit- Backrack-LED interior lights - Pioneer headunit with Alpine type s 6.5 and Polk 4x6 and 12 inch pioneer sub with alpine vpower amp.

  2. #2


    Felpro Gaskets are the best.... that's all I will ever use.
    2009 Chevy Silverado 2500HDLT 6.0L w/ Towing Package, Dick Cepek GM8 Rims, Dick Cepek FC II 33X11.50R17,RKSport Ram-Air Hood(Functional), Lazer Lite Aluminum Tonneau Cover, Road Armor Stealth Bumper, PIAA Lighting, Diablo Trinity Tuner, Diablew Custom Tune, BullyDog Cold Air Intake, American Racing Headers w/highflow cats, Corsa Performance Sport Exhaust, Custom Striping, Black Bowties front and rear, Fuel Grille Inserts, Recon Headlights, Readylift Shocks, Readylift Upper Contol Arms, 2" Blocks in the Rear..

    Future Plans: HD Tie Rods, Under hood upgrades, Crower Camshaft and possibly electric fans.

  3. #3
    Jr. Engineer poncho62's Avatar
    Join Date
    Sep 2013
    Hanover, Ont, Canada


    Get the manifolds planed....any machine shop can do it. Why go through all this again in a few months?

    1997 GMC

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