Got jiggy with it. 4L80E behind 455 BBB

Discussion in 'The "Juice Box"' started by Mr. Sunset, Oct 18, 2015.

  1. Mr. Sunset

    Mr. Sunset Platinum Level Contributor

    4L80E behind 455 BBB - UPDATED 10-31-15

    Having elbow surgery last wednesday really laid me out. between the meds, the Ice and all the other post surgery crap. I said to myself...
    SELF..thats all I can stands cuz I can't stands no more.
    I went back into the garage and installed that transmission that I've planed for months.
    the last piece of the puzzle was the TSP 9.5" converter that was on my porch the morning I walked out, to go to the hospital. ya go. 4L80E behind the 455 big block Buick. nap time.
    IMG_1417.jpg IMG_1418.jpg IMG_1420.jpg IMG_1421.jpg
    Edited details: red eagle clutches and a HD2 Transgo kit. 9,5"/3000stall TSP converter.

    Here is the first thread with a lot of good information (black70buick,Thanks Chad) that helped me move forward on this conversion.
    Last edited: Nov 4, 2015
  2. Jim Weise

    Jim Weise EFI/DIS 482

    Congrats Joe, hope your feeling better soon!

  3. mygs462

    mygs462 Well-Known Member

    What all do you need to runs this trans??
  4. 70 gsconvt

    70 gsconvt Silver Level contributor

    Looks great. Good luck with your elbow.

    Had a question. What is your driveline angle with that tranny in there? Just curious.
  5. Mr. Sunset

    Mr. Sunset Platinum Level Contributor

    I'm learning as I go. But I know I need a shifter, a controler. a throttle positioning sensor. a rpm sensor maybe. I may be able to plug the trans controller into the 6AL2 programmable ignition controller. If I read it right. as I said, "still learning". also a flexible dipstick.
  6. Mr. Sunset

    Mr. Sunset Platinum Level Contributor

    I don't have that information as of yet. I'll try to get that posted soon
  7. Joe B

    Joe B Well-Known Member

    What did the trans come out of? Did you need an adapter and, if so, who makes it?
  8. Mr. Sunset

    Mr. Sunset Platinum Level Contributor

    the trans came out of a 94 GMC vandura one ton. the adapter is a TCI adapter plate from summit
  9. 69GS400s

    69GS400s own amusement ride!

    Good job doing it with the bad elbow and all .. most of us would have put it in from under the underside, but I can see how pulling the body instead made it a much easier job :puzzled::Do No::Dou:

    hwprouty and angelorayhurst like this.
  10. bhambulldog

    bhambulldog 1955 76-RoadmasterRiviera

    This could be a "how to" thread sticky
    Donuts & Peelouts likes this.
  11. bhambulldog

    bhambulldog 1955 76-RoadmasterRiviera

    Nice Work!!!
    He's hell when he's well.
    And when he's not'
  12. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    I am doing this swap as well. I have a $200 controller that is setup for instant manual electronic shifting via buttons on the steering wheel. Most controllers are $600-1000 but I don't mind shifting myself. You can also get a manual valvebody and use a floor shifter.

    As he is using a TCI adapter plate converts from Buick to Chevy trans pattern. Yoke is the same spline as a th400.
  13. Mr. Sunset

    Mr. Sunset Platinum Level Contributor

    actually, without the body on. I can't give accurate information on this.
  14. Jim Jones

    Jim Jones Wretched Excess

    Do you anticipate any clearance issues? The housing below the cooler lines looks like it may get pretty close to the floor pans/transmission tunnel.
  15. Buicksky

    Buicksky Silver Level contributor

    Way to go Joe! Looking good! Will the drive shaft be shorter with that trans? Will any floor board adjustment be necessary?
  16. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Chevelle guys are fitting the 4L80E without any floor/hump clearance mods or issues.
  17. alvareracing

    alvareracing Well-Known Member

    great to see that the factory cross member is going to work for me too. Thanks for sharing the pics!
  18. 70 gsconvt

    70 gsconvt Silver Level contributor

    You don't need the body on to get the drivetrain/rearend angles. The chassis just needs to be on a flat and level piece of ground. Measurements are taken off of the end of the driveshaft and the rearend where the driveshaft connects up.
  19. Mr. Sunset

    Mr. Sunset Platinum Level Contributor

    I'm not to sure about the clearance yet. JW suggested 1/4" shims at the body and radiator support mounts. may need a little purssuation around the tunnel

    the drive shaft will be shorter by 4 to 6 inches. I'm extending the factory mounts next weekend and will have more precise measurments on the difference betwwen the t400 and 4l80e

    Good to know. I'll look up some 67 chevelle conversions for more info

    I can pull the angles off my smartie fone level. it will give me the degree. I thought the pinion angle would change when the body weight was added. maybe more under heavy acceleration yes???
  20. nickwhite

    nickwhite Platinum Level Contributor

    Phillip is correct here.:TU:
    Next time we meet I will give you the Generals contact info.
    He will meet you at the garage and make the proper measurement, build
    your drive shaft and install it to make sure it has good clearances. This guy is
    the best in the Valley. :bglasses:

Share This Page