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Drill mod

This is a discussion on Drill mod within the Manual Transmission forums, part of the Drivetrain category; What is the advantage of the drill mod and do you notice a diffrence. I have my tranny out waiting ...

  1. #1
    Member 99yellowz28's Avatar
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    competition yellow
    1999 camaro m6

    Drill mod

    What is the advantage of the drill mod and do you notice a diffrence. I have my tranny out waiting for a clutch and im thinking of doing it. BTW im getting ls7 clutch if it matters

  2. #2
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    Black
    2002 Trans Am

    Bump

    Bump- I'm in the same situation and was wondering also.

  3. #3
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    The drill mod removes the restriction in the hydraulic line so the fluid flows faster. This is supposed to cure the sticky, lazy clutch pedal during quick, high rpm shifts. I'd also like to here some personal stories of people who have done it.

  4. #4
    The Bandit Wesman's Avatar
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    1998 Trans Am WS6

    I did the "drill mod" on my clutch line when I installed my LS7 clutch and new GM master & slave cylinders. Never had a problem with the clutch sticking to the floor or releasing slowly, but I figured I might as well do it while I had the whole system apart. It says to use an 1/8" drill bit, but I ended up using a 7/64" with mine because the 1/8" didn't even fit into the line opening, and I didn't want to chew up the inside of the line.

  5. #5
    Member 99yellowz28's Avatar
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    competition yellow
    1999 camaro m6

    is the tick adj master worth getting it also says that the line is bigger so you dont need to do the drill mod

  6. #6
    Junior Member cdorch's Avatar
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    i did exactly what wesman did when i installed my ls7 and all new hydraulics and havent had it stick to the floor or get spongy yet and it did it quite a bit before all the new parts...so to be honest idk if the drill mod did anything because i installed so many other new parts but i figured why not do it, it makes sense

  7. #7
    Member 99yellowz28's Avatar
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    competition yellow
    1999 camaro m6

    Quote Originally Posted by cdorch View Post
    i did exactly what wesman did when i installed my ls7 and all new hydraulics and havent had it stick to the floor or get spongy yet and it did it quite a bit before all the new parts...so to be honest idk if the drill mod did anything because i installed so many other new parts but i figured why not do it, it makes sense
    Well i got everything on the way from kyspeed $1815 total

  8. #8
    Member 99yellowz28's Avatar
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    competition yellow
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    Any other people with drill mod?

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