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  1. SCOOBYDANNN

    SCOOBYDANNN 1/2 ton status

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    Ok. I was talking to a guy in town, he's on the boards here (dpearson) i belive, be we got talking about the hookups we have in this area (mainly Mexico) and he said there was quite a few of these trannies (4L80E)down there, rotting away cause they dont know how to work on them, or even don't know what they are. From what I understnd, they are 400s w/ an overdrive. am I right? is there a demand for these trannies. if there is, what kind of trucks do I look under.

    You know who I am
     
  2. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    A 4L80E is the newer version of the 700r4. I believe that they are elctronically controlled, so I'm not sure if they'll work in an older Blazer without some sort of wring mods.......

    Correct me if I'm wrong.



    <font color=blue> MEAN DAD WITH TWO BAD KIDS<font color=blue>
     
  3. Nonesuch

    Nonesuch 1/2 ton status

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    they sell kits to put these in older trucks and yes they are basically th400's with an overdrive. If the price is right i would love to have one of these trannys sitting in my blazer!
     
  4. wakedog

    wakedog 1/2 ton status

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    It goes like this so i think
    4L60E=th350 w/ overdrive
    4L80E=th400 w/ over drive

    Both the 4L60E and 4L80E are both electronically controlled. But i think that Jet makes a closed loop wiring harness to make either work w/ non computer controlled units.


    <a target="_blank" href=http://www.bigredjimmy.iwarp.com>http://www.bigredjimmy.iwarp.com</a>
     
  5. Hossbaby50

    Hossbaby50 3/4 ton status

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    I remember reading that the people that do the Raptor 700R-4 do an 4L80E that has been modified to be a normal tranny, and not need the computer.
     
  6. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    If the price is right, I would scoop up a 4L80 in a heartbeat. Get it, hearbeat? Chevy? Anyway, the 4L80 is a 400 on electronics and overdrive. There would be issues though because I believe the 4L80 is about two inches longer than a 700, but with the strength of it almost double of a 700 if I remember right, the resulting fabricating chaos would be worth it.

    Bubba Ray Boudreaux,
    Leader of the Advance Party for
    the CSA revolution in the PRK!
    <a target="_blank" href=http://community.webshots.com/user/mdntrdr1>http://community.webshots.com/user/mdntrdr1</a>
     
  7. Jason73K5

    Jason73K5 1/2 ton status

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    Let us know what kind of prices you can get on those, I'm sure that you'd have more buyers than you could deal with!

    73K-5: TBI350/TH-400/NP-203/14FF/D44
    Topless, doorless and no tailgate!
    Fresno, CA
     
  8. Ddragggon

    Ddragggon 1/2 ton status

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    yeah, I NEED A TRANNY FOR MY C20!!

    heh, and since its going to cost me an arm, a leg, and any firstborn I might ever have, I may as well make it a good stout overdrive tranny.....

    -Rich

    ph34r m3!

    1337 TruXoR
     
  9. nyyef

    nyyef 1/2 ton status

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    my understanding was the TH350 became the 700-R (a 350 w/ overdrive) which then became the 4L60E (a better 700-R).
    the TH400 just went straight to 4L80E (a 400 w/ overdrive).

    Jet make a harness for non-computer vehicles, but it costs around a grand or something. i have heard that you can pull one off a diesel truck, with its harness and it will work.

    "If it is breakable, IT will break. If it is indestructable, I will find a way to make it breakable, and I will break it."--Knife
     
  10. jwduke

    jwduke 1/2 ton status

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    Jet make a conversion to put the 4L80E in a non-computerised vehicles. Don't remember the cost though! I had mt '87 TH700R-4 overhauled &amp; installed Corvette guts, that really made a much better tranny out of it! I can tow in overdrive now, plus I installed a big arse cooler on it. I've got $1500 in it &amp; I'm pretty happy so far. If it goes a 4L80E is my next step!

    1 ton '87 Chevy SWB in the making!
     
  11. azblazor

    azblazor 1/2 ton status Premium Member

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    The 4L80E is an electronically controlled TH400 with overdrive. There is a lot of potential - they are very strong.
    I run a 4L80E in my K5. I happen to heve a factory computer and wiring harness, but there are transmission control units (TCUs) which can be used without the factory computer.
    To start with try this site:
    <a target="_blank" href=http://www.martelbros.com/tci/electronics/index.htm>http://www.martelbros.com/tci/electronics/index.htm</a>
    I have read that they can be rebuilt to remove the electronics and operate from the shifter only.
    Mark



    <font color=blue>azblazor</font color=blue>
    <font color=orange> 79 K5 454-FI / 4L80E, NP205, D60, FF14, 4" lift, 9K Warn </font color=orange>
     
  12. SCOOBYDANNN

    SCOOBYDANNN 1/2 ton status

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    does anyone have a pic or the years of trucks to look under?

    You know who I am
     
  13. Butch

    Butch 1/2 ton status

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    Heavy duty 2500 and 3500 from 96 up for sure have them. That is what is in my 98 and it is a monster of a tranny. It is also a horsepower eater so weigh that in as well.

    I thought I was wrong once,
    but I was mistaken
     
  14. azblazor

    azblazor 1/2 ton status Premium Member

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    The 4L80E was put in trucks starting in 1991.
    Here is some info on GM transmissions in the below link. I have some pictures some where...I'll look around.
    <a target="_blank" href=http://www.advanceadapters.com/acrobat/gtrans.pdf>http://www.advanceadapters.com/acrobat/gtrans.pdf</a>
    Mark

    <font color=blue>azblazor</font color=blue>
    <font color=orange> 79 K5 454-FI / 4L80E, NP205, D60, FF14, 4" lift, 9K Warn </font color=orange>
     
  15. talldogg

    talldogg 1/2 ton status

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    Danny,
    Ditto what everyone else said, the 4L80e would be the way to go, strength plus OD. It would definitely be worth the mods required to make it work. I'm in San Diego and I've got my "hook ups" in Tijuana as well, so I never worry about finding stuff, just paying for it!! LOL!

    Mark,
    Could you elaborate on how you got the 205 hooked up to the 4L80??? Was the 4L80 originally 4wd or did you convert it from 2wd? Would the 4wd version be a better choice to begin with (the case should be stronger, right?)? I just ask because I'm sure the 2wd version would be easier to find, but I'm wondering if there's any reason to hold out for a 4wd version. Thanks!

    If it doesn't sit on a frame, then it isn't a truck.
     
  16. azblazor

    azblazor 1/2 ton status Premium Member

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    Sam,
    My engine and 4L80E was from a 4WD Dually. It is mated to a 32 spline input NP205 with an approx. 2" machined alum adapter with sealing orings to match up the bolt patterns. The adapter was a custom job, but you can buy them from Advance adapters <a target="_blank" href=http://www.advanceadapters.com>www.advanceadapters.com</a>
    Mark

    <font color=blue>azblazor</font color=blue>
    <font color=orange> 79 K5 454-FI / 4L80E, NP205, D60, FF14, 4" lift, 9K Warn </font color=orange>
     
  17. talldogg

    talldogg 1/2 ton status

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    Mark,
    Thanks for the reply. Eventually I'll go with the 4L80E, it's just a matter of time before the Th350 dies behind my 454. I take it you purchased the engine/tranny combo out of a wrecked truck. That's got to be the best way to go. Thanks again.
    Sam

    If it doesn't sit on a frame, then it isn't a truck.
     
  18. dyeager535

    dyeager535 1 ton status Premium Member

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    First off they are immensely heavy, and probably "rob" power like mad, just like the TH400 to TH350 or Powerglide.

    GM may even be making the tranny control units... (everyone is correct, The "E" means electronic, shifting is controlled solely by electronics, no kickdown or tv cables anymore) check www.sdpc2000.com, I think I've seen the control units there, and thats a GM dealer, FWIW.

    Dorian
    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
    No anti-theft measures on your truck? No pity when its stolen
     

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