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

Super T-10 Sealing Questions

Thread Tools
 
Search this Thread
 
Old Mar 19, 2024 | 02:17 PM
  #1  
OrangeC3ButImAnAggie's Avatar
OrangeC3ButImAnAggie
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: May 2023
Posts: 153
Likes: 35
From: The Alamo, Texas
Default Super T-10 Sealing Questions

1974 L-82 4-speed (Super T-10) Coupe. I'm currently buying a bunch of parts to replace my clutch and do some other overdue tasks while I'm in there. My question is:
  1. Does the super T-10's side cover (with the two shift shafts) seal to the transmission body with RTV or with a gasket from the factory? And what would you suggest I replace it with.
  2. One bolt is missing from the side cover. I know it is a 5/16-18 thread, as I verified the threads from the missing hole are sound. What length are these bolts and where can I find "correct" ones?
Thanks!
Reply
Old Mar 19, 2024 | 05:13 PM
  #2  
interpon's Avatar
interpon
Le Mans Master
Supporting Member
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2019
Posts: 7,668
Likes: 2,473
From: Indiana
Default

Originally Posted by OrangeC3ButImAnAggie
1974 L-82 4-speed (Super T-10) Coupe. I'm currently buying a bunch of parts to replace my clutch and do some other overdue tasks while I'm in there. My question is:
  1. Does the super T-10's side cover (with the two shift shafts) seal to the transmission body with RTV or with a gasket from the factory? And what would you suggest I replace it with.
  2. One bolt is missing from the side cover. I know it is a 5/16-18 thread, as I verified the threads from the missing hole are sound. What length are these bolts and where can I find "correct" ones?
Thanks!
gasket.. maybe pull one bolt out to measure..
https://www.corvetteforum.com/forums...ispreloading=1


Last edited by interpon; Mar 19, 2024 at 08:29 PM.
Reply
Old Mar 21, 2024 | 05:22 PM
  #3  
OrangeC3ButImAnAggie's Avatar
OrangeC3ButImAnAggie
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: May 2023
Posts: 153
Likes: 35
From: The Alamo, Texas
Default

Originally Posted by interpon
gasket.. maybe pull one bolt out to measure..
https://www.corvetteforum.com/forums...ispreloading=1

So gasket only? or gasket + rtv?
Reply
Old Mar 21, 2024 | 08:43 PM
  #4  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,282
Likes: 7,862
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

Shouldn't need RTV if surfaces are clean and flat. The factory never put RTV on it.
Reply
Old Mar 21, 2024 | 09:01 PM
  #5  
OrangeC3ButImAnAggie's Avatar
OrangeC3ButImAnAggie
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: May 2023
Posts: 153
Likes: 35
From: The Alamo, Texas
Default

Great, thanks!
Reply
Old Mar 22, 2024 | 04:51 PM
  #6  
GTR1999's Avatar
GTR1999
Tech Contributor
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 1999
Posts: 15,187
Likes: 4,008
From: Connecticut, USA
Default

I always put a skim coat on them. Look on Youtube Pauls used Loctite sealant on them.
Reply
Old Apr 19, 2024 | 06:50 PM
  #7  
OrangeC3ButImAnAggie's Avatar
OrangeC3ButImAnAggie
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
Photogenic
Liked
 
Joined: May 2023
Posts: 153
Likes: 35
From: The Alamo, Texas
Default

Update:

I found a pre-cut paper gasket on eBay, put a skim coat of RTV on it, sealed it up, no leaks at all. Also changed the shift shaft seals. The nine side cover bolts are 5/16-18 and 3/4" long. I ordered those from McMaster Carr. Turns out I was missing 3 bolts from my side cover!
Reply

Get notified of new replies

To Super T-10 Sealing Questions





All times are GMT -4. The time now is 02:31 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
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-7
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-8
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-9
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