The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-10-2013, 05:44 PM   #1
AndrewSeib
Registered User
 
Join Date: Mar 2013
Location: Princeton, IN
Posts: 11
Stiff clutch 72

No slip runs and drives great. shifts as it should, but the clutch is extremely heavy. My main concern is my grandma is begging me to drive it because she had one in her younger (more limber) days, and I highly doubt she could manage to apply the clutch as it is. Any suggestions to loosen it up a bit?
AndrewSeib is offline   Reply With Quote
Old 04-10-2013, 08:04 PM   #2
68gmsee
Active Member
 
68gmsee's Avatar
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
Re: Stiff clutch 72

A few possiblities.

Throw out bearing shaft needs lubricating. Also, a worn pressure plate or maybe
heavy duty clutc/pressure plate installed on the truck. I had this on my 69. It was very hard to push so I bought a non heavy duty pressure plate and clutch and made a lot of difference.
__________________
68 GMC 250/3 speed Saginaw p/b p/s
69 Chevy 350/350 currently in pieces still lookin for a cab
06 Trailblazer
I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...
68gmsee is offline   Reply With Quote
Old 04-10-2013, 08:13 PM   #3
AndrewSeib
Registered User
 
Join Date: Mar 2013
Location: Princeton, IN
Posts: 11
Re: Stiff clutch 72

Thanks man!
Posted via Mobile Device
AndrewSeib is offline   Reply With Quote
Old 04-10-2013, 09:18 PM   #4
68gmsee
Active Member
 
68gmsee's Avatar
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
Re: Stiff clutch 72

On second thought, you may not want grandma to drive it..
__________________
68 GMC 250/3 speed Saginaw p/b p/s
69 Chevy 350/350 currently in pieces still lookin for a cab
06 Trailblazer
I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...
68gmsee is offline   Reply With Quote
Old 04-11-2013, 12:46 AM   #5
AndrewSeib
Registered User
 
Join Date: Mar 2013
Location: Princeton, IN
Posts: 11
Re: Stiff clutch 72

Oh its okay, better now than after the rebuild! she can't do too much damage at this point haha so I'll let her have her fun before I sink a lot of time and money into my baby! :p
Posted via Mobile Device
AndrewSeib is offline   Reply With Quote
Old 04-11-2013, 01:39 AM   #6
Rufton
Registered User
 
Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
Re: Stiff clutch 72

Sometimes the 3 finger pressure plates get very stiff.
Even a new 3 finger is stiffer than a typical diaphragm pressure plate.
I put non-performance diaphragm pressure plate from autozone on 66 and pedal is much easier and smother.

I also replaced linkage bushings w/ bronze.
Rufton is offline   Reply With Quote
Old 04-11-2013, 02:28 PM   #7
AndrewSeib
Registered User
 
Join Date: Mar 2013
Location: Princeton, IN
Posts: 11
Re: Stiff clutch 72

Thanks for the advice! I'll look into these things!
AndrewSeib is offline   Reply With Quote
Old 04-11-2013, 02:47 PM   #8
Rufton
Registered User
 
Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
Re: Stiff clutch 72

Autozone part number nu551 contains diaphragm pressure plate that fit 66 it also contains a clutch but that didn't fit 66. just compare to OEM before install.
Rufton is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:01 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com