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Drill Mod?

This is a discussion on Drill Mod? within the Drivetrain forums, part of the LSx Technical Help Section category; I was searching around and some people were talking about a drill mod on 98-02, I derived it relates to ...

  1. #1
    It's the slow black one
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    Black
    1998 Camaro Z28

    Drill Mod?

    I was searching around and some people were talking about a drill mod on 98-02, I derived it relates to the slave cylinder. I did a search and didn't really find much information on it.

    What is the problem? What is the drill mod exactly?

    Is this something I should be considering doing for my 98?

  2. #2
    Senior Member
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    http://www.ls1camaro.net/sections.ph...rticle&artid=1 Also at www.installuniversity.com as part of a master cyl R&R w/a couple pics. Don't know how much it helps (A4 here) but a couple people I know have done it.

  3. #3
    Senior Member NeeD4SpeeD's Avatar
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    Collectors Edition Yellow
    2002 Pontiac Trans AM WS6

    If you have a 02 WS6 you dont need to do the drill mod because GM fixed the prob right?

  4. #4
    It's the slow black one
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    1998 Camaro Z28

    Thanks!

  5. #5
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    2001 Pontiac Trans Am

    Quote Originally Posted by NeeD4SpeeD
    If you have a 02 WS6 you dont need to do the drill mod because GM fixed the prob right?
    No they didn't

  6. #6
    Member Orange SS's Avatar
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    Ermine White
    1964 Chevelle

    restrictor still there, only update was the slave

  7. #7
    Senior Member Tobynine9's Avatar
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    Burple
    1966 427 Cobra Replica

    The 1/8" bit won't go past the fitting. Do I need to drill out some of the fitting too? That won't cause any probs will it? One step smaller will go past the fitting but it didn't take much to drill it past the restriction in the line and I'm still getting funky clutch action after hard, high shifts.

  8. #8
    Member Orange SS's Avatar
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    Ermine White
    1964 Chevelle

    fitting ? I drilled mine out to 9/64 because my 1/8 " bit was broke

  9. #9
    Senior Member Tobynine9's Avatar
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    Burple
    1966 427 Cobra Replica

    Yeah, the exterior-most orifice is smaller than 1/8". From what I understand, I could certainly be wrong, the restriction is past this point, within the line. Drilling the restriction out with a 1/8" drill bit requires you also drill the orifice of the fitting out to 1/8", at least it would on my car.

  10. #10
    Senior Member Tobynine9's Avatar
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    Burple
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    Anyone?

  11. #11
    Junior Member 98tadriver's Avatar
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    silver metallic
    1998 Pontiac Trans AM

    i have a 98 trans am with a spec stage 3, and a mcleod slave cylinder. i didnt do the drill mod, and after did the clutch/slave swap i dont have those problems like my old spec and stock slave. i belive the new slave has a slightly bigger bore but the master is still stock. i have no problems shifting or launching

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