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TMOD Lower Shift Box Mod = Magic Box

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Old Jan 3, 2019 | 02:58 PM
  #21  
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I had mine done several months ago, and I love it. Topped it off with a C6 shifter.

what a world of difference.
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Old Jan 13, 2025 | 10:04 PM
  #22  
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Looking for some advise here. I installed mine today, and the upper right bolt didn't fully align, I tightened it down and it's holding well. However I'm sure that it was me that didn't install correctly. Everything else went well, do you all have tips as to how to remedy this?
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Old Jan 14, 2025 | 12:36 PM
  #23  
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Originally Posted by Lakestreet
Looking for some advise here. I installed mine today, and the upper right bolt didn't fully align, I tightened it down and it's holding well. However I'm sure that it was me that didn't install correctly. Everything else went well, do you all have tips as to how to remedy this?
Chase the thread with a tap or just add washer if the bolt is long enough.
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Old Jan 14, 2025 | 07:06 PM
  #24  
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Try this loosen that bolt up and make sure the shifter alignment pin is all the way down. You might have to loosen the rest of the bolts too to get the pin down
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Old Jan 15, 2025 | 05:15 PM
  #25  
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Originally Posted by Lakestreet
Looking for some advise here. I installed mine today, and the upper right bolt didn't fully align, I tightened it down and it's holding well. However I'm sure that it was me that didn't install correctly. Everything else went well, do you all have tips as to how to remedy this?
Weird problem. That part of the TMOD lower box is a factory C5/C6 part. It should fit unless there's something strangely wrong with the delrin inserts TMOD installed there.
My suggestion would be to take it out, and thread the bolt in by itself. If it doesn't thread in easily, then you found your problem and @helga203 's idea of chasing the threads with a tap applies.

Originally Posted by feeder82
Try this loosen that bolt up and make sure the shifter alignment pin is all the way down. You might have to loosen the rest of the bolts too to get the pin down
Keep in mind this is a TMOD lower box. There's no receiving hole for a stock shifter's alignment pin.
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Old Jan 16, 2025 | 01:18 AM
  #26  
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I am uncertain if he means one of the 4 bolts holding the shifter to the tub, or one of the two holding the tub to the torque tube.

As stated, chase the thread to clean it up. Maybe some debris was in there. Other than that, were they all done in steps/sequence, or do you fully set each bolt one time as you rounded? Not typically necessary on these light parts but I like to go finger tight first on all four to get good alignment, then go in alternating sequence to set them. It it typically just part of my OCD.
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Old Jan 21, 2025 | 03:15 PM
  #27  
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I got the delrin bushings and love it - but some of the bolts came loose and I had to dive back in with some loc-tite - don't forget!
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Old Jan 21, 2025 | 08:45 PM
  #28  
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What changes are made to the box, or how does the billet box differ from the stock box?
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Old Jan 21, 2025 | 11:10 PM
  #29  
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He uses large bearings basically which will outlast the car and which eliminate flex in your existing tub.

The billet version is simply a new tub cnc cut from a solid block of strong aluminum vs the cast aluminum factory piece.
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Old Jan 22, 2025 | 05:46 PM
  #30  
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Thanks!
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