Bleeding clutch slave cylinder on T56
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Joined: May 2006
Posts: 583
Likes: 69
From: Pittsburgh, PA
Car: 91 Formula
Engine: 2012 LS9
Transmission: 4L80E
Axle/Gears: Strange 60 3.54:1
Bleeding clutch slave cylinder on T56
Anyone have a recommendation in how to get to the bleeder screw?
I cannot get past the headers to reach the screw.
I have some air in the cyl & am not getting full clutch travel.
Has anyone drilled a hole in the trans tunnel to get to the bleeder?
If so, any dimensions or photos?
Thanks in advance.
I cannot get past the headers to reach the screw.
I have some air in the cyl & am not getting full clutch travel.
Has anyone drilled a hole in the trans tunnel to get to the bleeder?
If so, any dimensions or photos?
Thanks in advance.
Thread Starter
Senior Member

Joined: May 2006
Posts: 583
Likes: 69
From: Pittsburgh, PA
Car: 91 Formula
Engine: 2012 LS9
Transmission: 4L80E
Axle/Gears: Strange 60 3.54:1
Re: Bleeding clutch slave cylinder on T56
Yes, but after looking at the bleeder setup, it is above the pressure line.
My guess is you cannot get all the air out without using the bleeder screw.
The pedal feels normal, just not releasing the whole way. My guess is there is just a bubble or 2 left in there.
If the mityvac woks... great, I just had my doubts.
My guess is you cannot get all the air out without using the bleeder screw.
The pedal feels normal, just not releasing the whole way. My guess is there is just a bubble or 2 left in there.
If the mityvac woks... great, I just had my doubts.
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iTrader: (4)
Joined: Oct 2008
Posts: 857
Likes: 5
From: Niles, IL
Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I've never opened the bleeder valve on mine. However, I didn't open up the slave cylinder during the swap (did disconnect the line from the tranny), so that may have been why the Mity Vac worked for me.
Thread Starter
Senior Member

Joined: May 2006
Posts: 583
Likes: 69
From: Pittsburgh, PA
Car: 91 Formula
Engine: 2012 LS9
Transmission: 4L80E
Axle/Gears: Strange 60 3.54:1
Re: Bleeding clutch slave cylinder on T56
Yes, the remote bleeder is something in hindsight that I should have done...
Now I have no desire to take the car apart to install one.
As for the slave cylinder, I installed a new one, so it was full of air.
It partially releases, I would say 75%.
I'll try the Mityvac, but thought about drilling an access hole in the floor & plugging it with a rubber grommet.
Now I have no desire to take the car apart to install one.
As for the slave cylinder, I installed a new one, so it was full of air.
It partially releases, I would say 75%.
I'll try the Mityvac, but thought about drilling an access hole in the floor & plugging it with a rubber grommet.
Senior Member
iTrader: (4)
Joined: Oct 2008
Posts: 857
Likes: 5
From: Niles, IL
Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Re: Bleeding clutch slave cylinder on T56
As far as I know, the remote bleeder is the best way to go because as you've already discovered it's almost impossible to do it alone without one. If the stupid floor wasn't in the way it wouldn't be so bad!
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Supreme Member
Joined: Mar 2004
Posts: 2,519
Likes: 4
From: In the Garage
Car: Camaro
Engine: 6.2L
Transmission: T56
Re: Bleeding clutch slave cylinder on T56
I drilled a hole in mine. 2" or so, it sure makes bleeding easy as I can do it all myself. I had a major grief last time around though and couldnt get all the air out without a power bleeder. The previous 5 or 6 times I had no issues I was done in a couple mins but last time... ufff
Thread Starter
Senior Member

Joined: May 2006
Posts: 583
Likes: 69
From: Pittsburgh, PA
Car: 91 Formula
Engine: 2012 LS9
Transmission: 4L80E
Axle/Gears: Strange 60 3.54:1
Re: Bleeding clutch slave cylinder on T56
Have any pictures or dimensions from inside the car?
I would hate to guess & miss the correct spot... seeing where it goes is nearly impossible.
I would hate to guess & miss the correct spot... seeing where it goes is nearly impossible.
Joined: Mar 2001
Posts: 10,421
Likes: 2,084
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Bleeding clutch slave cylinder on T56
I had my T56 built by RPM Transmissions (one of the best in the world) and they removed my remote bleeder and put the stock bleeder back in. They didn't explain why, but said the remote bleeders cause more problems bleeding then it is worth and they remove every remote bleeder that comes through the door.
Last edited by QwkTrip; Jan 8, 2013 at 12:17 AM.
Joined: Jun 2002
Posts: 13,576
Likes: 30
From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: Bleeding clutch slave cylinder on T56
I had my T56 built by RPM Transmissions (one of the best in the world) and they removed my remote bleeder and put the stock bleeder back in. They didn't explain why, but said the remote bleeders cause more problems bleeding then it is worth and they remove every remote bleeder that comes through the door.
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