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2WD 4L80E - 4WD conversion

Discussion in 'The Garage' started by 0cP, Sep 6, 2005.

  1. 0cP

    0cP Registered Member

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    I think the output of the 2WD 4L80E is 32 spline and a 241 has a 32 spline input. So what would I need to mate the two up? If I have to swap output shafts it would just be easier to get a 4x4 tranny and rebuild it then sell the 2WD 4l80E with 30k on it.
     
  2. sled_dog

    sled_dog 1 ton status

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    no one?
     
  3. sweetk30

    sweetk30 professional hooker Premium Member

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    both 32 spline but diffrent length. i dont know the length sorry. but you will also need to swap out the plug at the 3 oclock position on the 2x4 tranny to the 4x4 plug. this plug looks like a freeze plug in the case . it is visable when tail housing is removed. the 2x4 plug has a pin hole for oil to get to the fixed yoke bearing in the housing. and if left open will loose presser on that cirket and burn up tranny. plug from gm is less than 5 bucks.


    i did this to make my 2x4 fixed yoke 4l80-e go to a 205 from a 400. had friend make spacer from 6061 aluminum. about 100 buck to make it for me and that was with the aluminum.

    205 spacer.jpg
     
  4. sled_dog

    sled_dog 1 ton status

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    THANK YOU!! Being as its a single cab longbed, a little driveline length won't hurt anything, if anything it will help breakover angles.

    In case you can't guess, OCP posted this for me while I was at school.

    I'm heavily considering bailing on the S10 project and building a trail/street rig out of my 1997 C2500.

    Don't jump on me, I will finish the S10 but sell it when its a rolling chassis, if I do this...
     
  5. sweetk30

    sweetk30 professional hooker Premium Member

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    spacer is easy to make. we just slid case on to shaft and hit bottom on splines and pulled back 10 thds length. it came out to exactly 1.25" thick spacer. and dont forget the 400 oring lip on the adaptor is diffrent size than 4l80-e. we just made the propor size in both halfs of the spacer.
     
  6. BlazinMudd90

    BlazinMudd90 Registered Member

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    There's a bunch of different length tailshafts / output shafts for the 4l80e: 3 3/4, 5, 7 7/8, 7 3/8, 8, 8 1/8, and 9" I think that's all of them.. But they are all 32 spline. There is also a conversion shaft available that's 27 spline for swapping a 4l60e for a 4l80e There's a site wittransmissons.com[/url] that has them all for sale for under $80 the 4x4 ones are the 3" and 5" ones I guess it depends what case/adapter you are running. The stock adapter to a 208/241 I believe is 2.5 inches thick and I'd imagine the 3 3/4 shaft would be the ticket once installed, but don't quote me on that my research is based on compatibility with a doubler which is a whole different game... Just figured I'd shed a little more light.. I gotta put a call into them (WIT) to see what shaft I need and to see if I am correct.
     
  7. sweetk30

    sweetk30 professional hooker Premium Member

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    old thread from the dead.

    we have a 4l80-e thread to 205 tcase with tons of info and pics.

    plus i built a 4l80-e to 203/205 doubler. and used a 241 adaptor and drilled the 203 face.

    thanks and welcom to the site.
     
  8. manchildau65

    manchildau65 1/2 ton status Premium Member

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    would another option be to use a divorced 205 (cheap and easy)?
     

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