C4 General Discussion General C4 Corvette Discussion not covered in Tech

Missing connection on radiator?

Thread Tools
 
Search this Thread
 
Old Mar 26, 2022 | 12:33 PM
  #1  
jschmidt's Avatar
jschmidt
Thread Starter
Advanced
Conversation Starter
All Eyes On Me
 
Joined: Nov 2021
Posts: 74
Likes: 1
From: Estes Park, CO
Default Missing connection on radiator?

What is this missing connection on the radiator? This C4 is relatively new to me and didn't notice this when I bought it. Everything runs fine, was checking the radiator fluid and saw this.



What is the missing connection for?
Reply
Old Mar 26, 2022 | 01:38 PM
  #2  
Deepa's Avatar
Deepa
Burning Brakes
10 Year Member
 
Joined: Mar 2010
Posts: 1,094
Likes: 68
From: Providence RI
Default

Is your car a manual trans?

Looks like the fittings for the auto trans cooler lines
Reply
Old Mar 26, 2022 | 01:40 PM
  #3  
ls777z's Avatar
ls777z
Drifting
10 Year Member
All Eyes On Me
Liked
Top Answer: 1
 
Joined: Nov 2015
Posts: 1,333
Likes: 397
From: Clay New York
Default

Reply
Old Mar 26, 2022 | 01:47 PM
  #4  
jschmidt's Avatar
jschmidt
Thread Starter
Advanced
Conversation Starter
All Eyes On Me
 
Joined: Nov 2021
Posts: 74
Likes: 1
From: Estes Park, CO
Default

It is indeed. Small sigh of relief 😃. Should I have a plug there instead?
Reply
Old Mar 26, 2022 | 02:13 PM
  #5  
ajp01's Avatar
ajp01
Drifting
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Jan 2021
Posts: 1,312
Likes: 384
From: Northern California
Default

Nice to have a plug but not critical. That top fitting is matched by a lower fitting on the same side of the radiator. It's the automatic transmission cooler as Deepa said - not used on your car - and they usually (but not always) have a plastic plug over the threaded opening. Check to see if your lower one has a plug on it also.
Reply
Old Mar 26, 2022 | 07:12 PM
  #6  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Default

Don't the 4+3s use the radiator for cooling the od?
Reply
Old Mar 26, 2022 | 07:51 PM
  #7  
arbee's Avatar
arbee
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 2,677
Likes: 812
From: Saskatoon Sask.
Default

Originally Posted by 383vett
Don't the 4+3s use the radiator for cooling the od?

Assume so but the OP's is an '89
Reply
Old Mar 26, 2022 | 08:47 PM
  #8  
Mixednuttz's Avatar
Mixednuttz
Pro
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
2022 C4 of the Year Winner - Modified
Finalist 2020 C4 of the Year - Modified
Default

Originally Posted by 383vett
Don't the 4+3s use the radiator for cooling the od?
They do. I'm 99% certain the radiators are the same for both the auto and manual in the early cars. (Unrelated note: I am looking forward to ditching those OD cooler lines in my 85 once I switch to a ZF.) I would just get some plugs if it really bothers OP.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 26, 2022 | 09:36 PM
  #9  
Bfenty's Avatar
Bfenty
Drifting
 
Joined: Mar 2017
Posts: 1,897
Likes: 165
From: Nashville TN
2017 C4 of Year Finalist
Default

Originally Posted by 383vett;[url=tel:1604920446
1604920446[/url]]Don't the 4+3s use the radiator for cooling the od?
you’re right but the ‘89 switched to the six speed so no auto trans. Makes sense that they re used the radiator though since most of the rest of the car is the same.
Reply
Old Mar 27, 2022 | 02:40 PM
  #10  
Kilobuck84's Avatar
Kilobuck84
Drifting
Active Streak: 30 Days
Photogenic
Loved
Community Favorite
 
Joined: Nov 2021
Posts: 1,737
Likes: 386
From: People's Republic of Nueva York
Default

Maybe it would make a nice power steering cooler.
Reply

Get notified of new replies

To Missing connection on radiator?





All times are GMT -4. The time now is 06:24 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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