C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Clutch problem

Old Nov 2, 2025 | 02:00 PM
  #1  
whatcop@msn.com's Avatar
whatcop@msn.com
Thread Starter
1st Gear
 
Joined: Nov 2025
Posts: 1
Likes: 0
Default Clutch problem

I am new .member, having bought a used 1973 convertible recently.. It has a good 350 built to LT1 specs, very energetic, and a doug nash 5 speed manual. I went to drive it last month, started up just fine, but it would not go into gear. The clutch felt normal, like it was pressing on the pressure plate fingers . But would not go out of neutral. MY diagnosis is that the clutch disk is stuck or rusted to the flywheel, or stuck/rusted to the trans shaft splines in the engaged position. I can roll the car in the garage if its in neutral. With the engine off, shifter in say 4th gear, and the clutch fully depressed by my wife, I cannot roll the car. I tried rocking it back and forth, engine off, clutch depressed to free the disk, but no dice. I may not be rocking it hard enough, as I am fairly weak due to chemo and being 74 years old and under weight.

So is my diagnosis sound right and am I on the right track? Any other ideas? Next time son in law comes here, he and I can try rocking it loose, if that is the 'easy' way to fix it. Am I missing something here?

Thanks in advance,

Chris
Reply
Old Nov 2, 2025 | 04:03 PM
  #2  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,199
Likes: 7,797
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Default

Could very well just be a stuck disc if the car had sat a long time.
roll car out onto street. Get it pointed down the road. Put it first gear with clutch pedal held to the floor. Start the engine And drive the car with the clutch pedal held to the floor. Keep going in first occasionally giving the throttle a stab. Usually they break loose pretty quickly. Sometimes you'll go a mile. Once it breaks loose. Shift gears as normal. Slip the clutch a little on take off on purpose to clean it up.
Reply
Old Nov 2, 2025 | 05:26 PM
  #3  
sunflower 1972's Avatar
sunflower 1972
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 2016
Posts: 2,215
Likes: 972
From: Wauconda IL
Default

Originally Posted by whatcop@msn.com
I am new .member, having bought a used 1973 convertible recently.. It has a good 350 built to LT1 specs, very energetic, and a doug nash 5 speed manual. I went to drive it last month, started up just fine, but it would not go into gear. The clutch felt normal, like it was pressing on the pressure plate fingers . But would not go out of neutral. MY diagnosis is that the clutch disk is stuck or rusted to the flywheel, or stuck/rusted to the trans shaft splines in the engaged position. I can roll the car in the garage if its in neutral. With the engine off, shifter in say 4th gear, and the clutch fully depressed by my wife, I cannot roll the car. I tried rocking it back and forth, engine off, clutch depressed to free the disk, but no dice. I may not be rocking it hard enough, as I am fairly weak due to chemo and being 74 years old and under weight.

So is my diagnosis sound right and am I on the right track? Any other ideas? Next time son in law comes here, he and I can try rocking it loose, if that is the 'easy' way to fix it. Am I missing something here?

Thanks in advance,

Chris
Here's a very recent thread on that subject from our friends over on the C1 - C2 side: https://www.corvetteforum.com/forums...ck-clutch.html


Reply
Old Nov 3, 2025 | 07:31 PM
  #4  
Rebelyell's Avatar
Rebelyell
Drifting
 
Joined: Jun 2025
Posts: 1,693
Likes: 590
Default

Yup, Blanchard ground; not cut on a lathe.
Reply

Get notified of new replies

To Clutch problem



Thread Tools
Search this Thread

All times are GMT -4. The time now is 04:09 PM.

story-0
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-1
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-2
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-3
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-4
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-5
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-6
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-7
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-8
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-9
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE