Help Clutch
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
Help Clutch
I can't seem to get my clutch to engage. First a little history. I have a 1970 350 4 speed. I had my engine rebuilt to a 383. The builder provided me a new fly wheel told me it was required for balance. I have a stock 4 speed transmission. I replace the clutch and pressure plate with a corvette central stock replacement. I put it altogether and had very little clutch petal and had to adjust the linkage almost all the way out to get the petal to feel it was engaging. The clutch is not engaging, I push the clutch in and try to turn the wheel while in gear and they won't turn. I have the car on blocks and turn over the motor with the clutch petal down while in gear and the wheel turn. I tried to engage the clutch with a pipe wrench on the pivot arm and stull not engaging. I have measure the height of the new flywheel and it is the same as my original. I have had the tranny in and out several times and I and stumped.
Suggesting please.
Suggesting please.
Race Director
Joined: Dec 2004
Posts: 10,332
Likes: 63
From: PARADISE
St. Jude Donor '09-'11-'12-'13-'14
My guess is you have the wrong length throwout bearing or the pivot ball in the bellhousing is not set correctly. Maybe both.
Last edited by claysmoker; Jul 13, 2016 at 12:43 AM.
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
I found this post by Lars and it sound like my problem.
https://www.corvetteforum.com/forums...-70-454-a.html
Has anyone had a issues with the pressure plate sold by Corvette Central?
https://www.corvetteforum.com/forums...-70-454-a.html
Has anyone had a issues with the pressure plate sold by Corvette Central?
Racer
Joined: Jun 2009
Posts: 409
Likes: 3
From: St. James, NC
I can't seem to get my clutch to engage. First a little history. I have a 1970 350 4 speed. I had my engine rebuilt to a 383. The builder provided me a new fly wheel told me it was required for balance. I have a stock 4 speed transmission. I replace the clutch and pressure plate with a corvette central stock replacement. I put it altogether and had very little clutch petal and had to adjust the linkage almost all the way out to get the petal to feel it was engaging. The clutch is not engaging, I push the clutch in and try to turn the wheel while in gear and they won't turn. I have the car on blocks and turn over the motor with the clutch petal down while in gear and the wheel turn. I tried to engage the clutch with a pipe wrench on the pivot arm and stull not engaging. I have measure the height of the new flywheel and it is the same as my original. I have had the tranny in and out several times and I and stumped.
Suggesting please.
Suggesting please.
Last edited by wheatpj; Jul 13, 2016 at 11:46 PM. Reason: more content
Instructor
Joined: Jan 2003
Posts: 176
Likes: 1
From: port orange fla.
I installed the centerforce df setup, p.plate,disc, t.b. ,however I did not replace piviot ball for t.b fork . I then had same issue as op.
I cut off all but 1 1/2" of thread of " clutch pushrod ?" underhood.
used 1/4" carriage nut, nuts, washers, lock wash. and 1/4" threaded rod, - fully and easily adjustable, solved problem.
I cut off all but 1 1/2" of thread of " clutch pushrod ?" underhood.
used 1/4" carriage nut, nuts, washers, lock wash. and 1/4" threaded rod, - fully and easily adjustable, solved problem.
Dr. Detroit
Joined: Mar 2012
Posts: 10,095
Likes: 4,022
From: New Braunfels Texas
I found this post by Lars and it sound like my problem.
https://www.corvetteforum.com/forums...-70-454-a.html
Has anyone had a issues with the pressure plate sold by Corvette Central?
https://www.corvetteforum.com/forums...-70-454-a.html
Has anyone had a issues with the pressure plate sold by Corvette Central?
The McLeod is an excellent piece for the money.
I cannot remember exactly.....but I do not think the fork ball pivot is adjustable.......if it was....you could cheat it out a bit to gain more fulcrum. Just a thought.
Jebby
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
Post #18 is excellent reading.......and sounds like what you are going through.
The McLeod is an excellent piece for the money.
I cannot remember exactly.....but I do not think the fork ball pivot is adjustable.......if it was....you could cheat it out a bit to gain more fulcrum. Just a thought.
Jebby
The McLeod is an excellent piece for the money.
I cannot remember exactly.....but I do not think the fork ball pivot is adjustable.......if it was....you could cheat it out a bit to gain more fulcrum. Just a thought.
Jebby
Dr. Detroit
Joined: Mar 2012
Posts: 10,095
Likes: 4,022
From: New Braunfels Texas
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
Dr. Detroit
Joined: Mar 2012
Posts: 10,095
Likes: 4,022
From: New Braunfels Texas
Hmmm.....ok.....at this point you need to see if the throwout bearing is the correct one......there is a long and short of these.
I have the short one in my own car....but that may not be true for all C3 sticks......
I assume your old clutch worked fine......so there are only a few thing it could be.
If the pressure plate height is the same......look at the old throw out bearing and (do not laugh) make sure the disc is not in backward......you would be surprised how easy this is to do.
These are just some ideas.......let us know what you find.
Jebby
I have the short one in my own car....but that may not be true for all C3 sticks......
I assume your old clutch worked fine......so there are only a few thing it could be.
If the pressure plate height is the same......look at the old throw out bearing and (do not laugh) make sure the disc is not in backward......you would be surprised how easy this is to do.
These are just some ideas.......let us know what you find.
Jebby
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
Hmmm.....ok.....at this point you need to see if the throwout bearing is the correct one......there is a long and short of these.
I have the short one in my own car....but that may not be true for all C3 sticks......
I assume your old clutch worked fine......so there are only a few thing it could be.
If the pressure plate height is the same......look at the old throw out bearing and (do not laugh) make sure the disc is not in backward......you would be surprised how easy this is to do.
These are just some ideas.......let us know what you find.
Jebby
I have the short one in my own car....but that may not be true for all C3 sticks......
I assume your old clutch worked fine......so there are only a few thing it could be.
If the pressure plate height is the same......look at the old throw out bearing and (do not laugh) make sure the disc is not in backward......you would be surprised how easy this is to do.
These are just some ideas.......let us know what you find.
Jebby