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Thread: Torque pattern for 4L80 pan

  1. #1
    Join Date
    Jul 2008
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    Torque pattern for 4L80 pan

    Does anyone know what the torque pattern is for the 4L80 pan bolts? Also, do I need to lubricate the gasket with trans fluid prior to installation?

    ~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~

  2. #2
    Join Date
    Mar 2013
    Location
    Long Beach California
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    639
    not sure but if you look at most torque patterns on anything weather it be heads or intake or water pumps etc, 99 percent of the time they start from center and work their way out or start center and try to tighten all sides evenly in basically an X type pattern. and they also do at least two passes starting at a lower torque rating working your way up each pass to compensate for gasket crush. I wouldnt worry too much about getting it PERFECT though. its just an oil pan. not much pressure in there. just do it and check it a few days/week later. if its leaking, dryit up and silicone the hell out of it.... HAHAHAHAHA

    https://www.google.com/imgres?imgurl...act=mrc&uact=8
    but seriously just do something like this and you should be good to go.....
    Last edited by kewljay223; 04-28-2016 at 11:04 PM.
    Like Tumbler in "Gone in 60" I'll drive anything with wheels or without

    My 95 ECSB LQ9 build thread - http://www.ls1truck.com/forums/lsx-t...to-95-obs.html
    CALI LEGAL ENGINE SWAP!
    Stock 03 LQ9, DBW, 95' 4l80e w/ Transgo shift kit, 2010 50# GM injectors, 2800 Circle D stall, Spectre CAI, Upgraded trans cooler, Home-made E-fans/shroud, Dual EP-381 fuel pumps w/Home-made hotwire kit
    NEXT ON LIST: Dual Battery setup, CAM/Valvetrain upgrade, Build my own rear mount turbo, TRU-TRAC, HIT THE STRIP!!!

  3. #3
    Join Date
    Mar 2013
    Location
    Long Beach California
    Posts
    639
    On second thought. maybe you do need to torque that thing down since you have a 4L8000 trans.... that thing must be one insane transmission!
    Like Tumbler in "Gone in 60" I'll drive anything with wheels or without

    My 95 ECSB LQ9 build thread - http://www.ls1truck.com/forums/lsx-t...to-95-obs.html
    CALI LEGAL ENGINE SWAP!
    Stock 03 LQ9, DBW, 95' 4l80e w/ Transgo shift kit, 2010 50# GM injectors, 2800 Circle D stall, Spectre CAI, Upgraded trans cooler, Home-made E-fans/shroud, Dual EP-381 fuel pumps w/Home-made hotwire kit
    NEXT ON LIST: Dual Battery setup, CAM/Valvetrain upgrade, Build my own rear mount turbo, TRU-TRAC, HIT THE STRIP!!!

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