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
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
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 
