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stripped threads in transmission

Discussion in 'The Garage' started by hans999999, Feb 25, 2006.

  1. hans999999

    hans999999 1/2 ton status

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    The threads of 2 of the 4 bolt holes in the end of my transmission to hookup the adaptor from my np208 to my 700r4 are stripped. One is a bottom hole so i put a long bolt through and tightened it with a nut on the other side. Any ideas on how i could fix this? I was thinking, besides tapping new threads, a helicoil? anyone ever have this problem any fixes? Thanks advanced.
     
  2. ryan22re

    ryan22re 1/2 ton status

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    helicoil or bigger bolts are the only way i know to fix it right.
     
  3. Leper

    Leper 1/2 ton status

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  4. hans999999

    hans999999 1/2 ton status

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    thanks. tried the bigger bolts before. looks like i need to get some helicoils.
     
  5. westcoastblazin

    westcoastblazin Registered Member

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    Same thing happened to me, but the two bottom bolt holes. I used a kit called Perma-Thread, it's the same as helicoil, works great!
     
  6. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    maybe after its heli coiled ( and this is something I want to do anyway since we remove our chit a lot ) how about using studs in the tranny side . Then you can slide the adapter on and tighten some nuts instead .

    I gotta pull mine again soon just to reseal and inspect it , and may just do that .
     
  7. R72K5

    R72K5 Banned

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    local small time welder shop guy can fix you up good

    i once had a transmission that when i went to remove the bolts that hold the tranny mount to the case a big huge chunk of the case broke off and it took the threaded bolt hole and half the mounting pad with it, it was crazy, so much corrosion, the bolt was stuck froze in there, snapped the case

    so i took the tranny to the local welder guy and he fixed me all up for 35 bucks, added aluminum to the case there, and shaped it, and drilled and tapped a new hole

    like brand new

    the th350 trans i put in the 82 trans am out here, couple years ago, now in storage




    good luck
     
  8. George_Pimpdaddy

    George_Pimpdaddy 1/2 ton status

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    helicoil works great worked for my buddies 84 blazer same problem kept getting bad vibes
     
  9. westcoastblazin

    westcoastblazin Registered Member

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    Three posts up buddy, hehehehe :haha:
     

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