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Thread: 4L80E diagnostic

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  1. #1
    Join Date
    Jun 2007
    Location
    saratoga springs ,new york {upstate ,adirondacks }
    Posts
    1,878
    sorry i never had a 80 i didnt realize they werent the same parts EXACTLY.i had a stall and it still wasnt that soft.sorry forgot u were on an 80.and enough of the[ lol] not everyone is 101 yrs old and have read or worked on these things all our lives DAY AND NIGHT.LOL
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    yeah, this is the first 80e I've been inside of. The concepts are the same with all transmissions but things are done differently internally in the 80e than the 60e. The parts look very solid. I can't wait to feel the shifts of this big beast. The current 80e thats in the truck right now was pretty nice, can't wait to feel the difference with the shift kit, vacuum mod and 3600 rpm 9.5" stall converter.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Jul 2005
    Location
    Azle , Texas
    Posts
    702
    I did the .096 "firm" size holes on my 80e , was way to much for the street , chirped second every time it shifted , but Greg you may like it that hard .
    I shot penned the holes back to the "average" hole size (.076) , and if I want more kick I do it through the tune .
    But the Instruction say if you are using a "off-road use and with small diameter high stall converter make holes .120" .
    And you about right 4 hours in truck application .
    Now what is a tune again?

    Comp Cam 54-412-11 , Int:265, 212, .522 , Exh: 271, 218, .529 , LSA 114 , Longtube , CAI (Vararam) , TransGo HD2 shift kit , tuned by me with EFILive

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I didn't realize your truck had the 80e trans, Gibb. How's it holding up? I was surprised this 2002 trans I bought had been rebuilt.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Jul 2005
    Location
    Azle , Texas
    Posts
    702
    No problems , love the TransGo HD2 kit , did not go as far as you did with the install (in truck) , yours should be awesome with the whole kit installed .
    Rebuilt 2002 is strange , but I guess not all are tough as we think .
    Forgot to add , when you or Nelson does the trans segment swap (what EFILive calls it) into your current tune , set everything back to stock , except TM , and shift times , you don't need increased line pressure after a kit install , but I bet you knew that already !
    Last edited by Chevy366; 03-03-2008 at 11:56 AM.
    Now what is a tune again?

    Comp Cam 54-412-11 , Int:265, 212, .522 , Exh: 271, 218, .529 , LSA 114 , Longtube , CAI (Vararam) , TransGo HD2 shift kit , tuned by me with EFILive

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