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 08-26-2004, 05:40 PM   #1
69sixpackbee
Registered User
 
Join Date: Jan 2001
Location: Sabinal, Texas
Posts: 1,706
Clutch Rod Attaching Point..Which One?

There are 2 attaching "grooves" that the rod end (butterfly looking piece) from the "Z" bar can go into on the fork itself coming out of the bellhousing. The one closest to the bellhousing obviously shortens the stroke, but decreasing the leverage needed to disengage the clutch. The one further away is obviously the opposite in principle. I have a heavy damn clutch in my truck (402) and I had it in the closer hole but it just really fatigued my leg and was causing the rod coming down from the clutch pedal to flex quite a bit. I moved to the outer groove and the clutch is easier to push but I have to adjust the damn thing quite a bit out so that it will release all the way. I do find that when the engine is fully warmed up and I have been driving around a while the gear changing is much harder and it will really grind (I have to "clutch it") especially if I go from a forward to reverse gear even when completely stopped. There is some slop in the eyes of the linkages but not too excessive and the bellcrank assy. is nice and tight. It is REALLY close to the exhaust flange, in fact, I had to put some extra rubber on the pedal back-stop pad so that it would not be contacting the flange. This "pinging-like" noise was a real PITA as the sound emulating from it represented an engine ping and had me fooled for the longest time until I figured out it was the metal-to-metal resonance that was the culprit. I am damn near out of adjustment on the rod and I have even put a spacer on the little pilot "tit" that goes into one of the groove slots to give me a little more adjustability. It is possible I have an "El Cheapo" diaphragm spring pressure plate in it now causing this malady but it is not really that old. It grabs like a MOFO otherwise. Any suggestions?
69sixpackbee is offline   Reply With Quote
Old 08-26-2004, 07:26 PM   #2
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,403
I have a centerforce dual friction set up on the 69. & run the outer groove (just as you said, less peddle pressure). This hasnt caused any trouble with adjustments, & that clutch basically flat @ss works! one thing I did find on the longhorn, was that the stock cab bushings were too soft(the old truck has a tilt nose). At any rate, after installing urathane bushings, I have control of the clutch.....before, i wasnt sure where it would engage! all of my linkage has rodends at the pivot points, & I cant say enough good about that mod....it works better than new stock stuff. best of luck,crazyL
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn 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 05:45 AM.


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