Drivetrain Clutch, Torque Converter, Transmission, Driveline, Axles, Rear Ends

LT1 T56 Clutch fork measurement

Thread Tools
 
Search this Thread
 
Old Feb 17, 2011 | 06:16 PM
  #1  
92LT1RS's Avatar
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 426
From: Slidell, LA
LT1 T56 Clutch fork measurement

How far into the bellhousing should the clutch fork rest when properly installed?

I'm chasing down clutch issues, just bought McLeod adjustable master and metal slave cylinder. Went to bolt up the slave cylinder and the rod does not reach the clutch fork when the slave cylinder is seated against the spacer. Pulled the spacer back off and noticed the clutch fork is sitting back into the bellhousing a little ways and will freely move fore/aft about the distance that should disengage the clutch.

I've pulled the transmission twice now and yes, the pivot block is installed correctly and fully seated. Clutch is a Spec Stage 3+. Is it possible for the pressure plate to become jammed in a partially disengaged position?

Last edited by 92LT1RS; Feb 17, 2011 at 06:20 PM.
Old Feb 20, 2011 | 02:08 PM
  #2  
jloshotz's Avatar
Registered User
 
Joined: Jan 2006
Posts: 646
From: Long Island N.Y. Via Powhatan VA
Re: LT1 T56 Clutch fork measurement

is your clutch disc in properly, flat side facing away from the engine? Just a thought..
Old Feb 27, 2011 | 07:15 PM
  #3  
92LT1RS's Avatar
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 426
From: Slidell, LA
Re: LT1 T56 Clutch fork measurement

Yes it is. About to pull the transmission again and take a close look at the clutch.
Old Feb 27, 2011 | 09:23 PM
  #4  
92LT1RS's Avatar
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 426
From: Slidell, LA
Re: LT1 T56 Clutch fork measurement

Transmission is back on the ground. Clutch disc was installed correctly. Beginning to thing it's a pressure plate or throwout bearing problem, though nothing jumps out at me.
Old Mar 1, 2011 | 09:37 PM
  #5  
92LT1RS's Avatar
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 426
From: Slidell, LA
Re: LT1 T56 Clutch fork measurement

Something was definitely wrong with the pressure plate. First, it was warped. Wouldn't sit flat on the fab table in the shop. Second, there was an uneven wear pattern on the surface of it where it had obviously slipped at some point. Got the replacement pressure plate next to it and measured the height of the throwout bearing and it was over an 1/8" shorter. Once everything was reinstalled the clutch fork seemed to be in the correct position again. Working on getting the hydraulics installed now.
Old Mar 1, 2011 | 09:49 PM
  #6  
jloshotz's Avatar
Registered User
 
Joined: Jan 2006
Posts: 646
From: Long Island N.Y. Via Powhatan VA
Re: LT1 T56 Clutch fork measurement

Glad to hear you came up with something, hopefully your troubles are behind you

Last edited by jloshotz; Mar 1, 2011 at 09:50 PM. Reason: Typo
Old Mar 1, 2011 | 10:00 PM
  #7  
92LT1RS's Avatar
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 426
From: Slidell, LA
Re: LT1 T56 Clutch fork measurement

I sure hope so. Will find out in a few days when I get the master cylinder connected.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ch3vyb1gbl0ck
Classic Engine Tech
3
Oct 23, 2023 08:07 PM
HectorM52
Parts For Sale
0
Jan 30, 2015 11:08 PM
Cartercarterr10
Advanced Tech
1
Jan 15, 2015 09:13 PM
chevroletfreak
LT1 Based Engine Tech
202
Jul 4, 2005 05:00 PM




All times are GMT -5. The time now is 11:39 AM.