Drill mod?
Originally Posted by ss1129
I believe it allows the clutch to fully engage faster. I think gm did it so the rear didnt get beat to death.
The restriction was there to help save the propshaft from impacts. The drill mod will improve quick shifts. It depends on how you shift but for me, I can make a quick 1-2 shift but when I go to a 2-3 it acts like the gear is blocked. In severe cases ot clashes and does not complete the shift.
Yes it does make a difference.
Yes it does make a difference.
The restriction I believe was put there to make the shifts smoother and with less of a kick which does put less stress on the rear end. The downside is that it restricts the amount of fluid that flows to the trans. I highly recommend doing the drill mod. Prior to the drill mod my car would burn the clutch up at the track after I did the mod I had no problems. It makes the clutch engage/disengage slightly quicker and helps keep your clutch from burning up.
This is what I used when I did it http://installuniversity.com/install...sity/index.htm . The drilling part is really simple to do. But removing and replacing the master cylinder 
it can get to be a battle.
it can get to be a battle. Trending Topics
Originally Posted by 98Blubrd
This is what I used when I did it http://installuniversity.com/install...sity/index.htm . The drilling part is really simple to do. But removing and replacing the master cylinder it can get to be a battle.
it can get to be a battle.LS1 Tech Stories
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Verdad Gallardo I have heard if you end up having real problems to just drill the holes out a little so they will be a bit bigger. That should make is a piece of cake. I am about the replace all my master/slave and replace my clutch so I get to do it all over again. Its gonna be fun 
