1977 
Corvette







 
  WELCOME TO CORVETTEC3.COM WHICH STARTED IN 2002 WHICH MAKES IT ONE OF THE OLDEST CORVETTE FORUMS ON THE INTERNET.   WE WELCOME ANYONE THAT HAS INTEREST IN CLASSIC CARS ESPECIALLY CORVETTES.  WE ALSO WELCOME QUESTIONS AND ANSWERS AS LONG AS YOU ARE RESPECTFUL OF OTHERS. 
  HomeHelpSearchLoginRegister  
 
 
1969 Corvette Best Radiator combination (Read 82 times)
Oct 1st, 2018 at 2:58pm

Langan Repair   Offline
Newbie
I Love my Corvette!
Columbus NE

Gender: male
Posts: 1
 
I am working on a 1969 Corvette for my step father
The car was built back in the 90's as a show car and the fan shroud and fan were replaced with a old style electric fan

Not a lot of focus was put on drivability and I am trying to fix that

It is a non air roadster with a 350 and 4 speed and he has a lot of trouble with this car overheating and I am looking to solve this

My question is what would be the best combination of radiator and fan to install to get the best cooling so that he ends up with something that he can get in and drive anywhere

It currently has the small radiator 18x16 core with the remote fill tanks

Is this radiator sufficient for the small block when used with a proper fan shroud and mechanical fan.

Should I use a clutch fan? Would I be better off going to the larger radiator 26x17 

I appreciate any help that anyone can provide like I said I am just trying to make this a nice reliable driver for him

Thanks for your help
 
IP Logged
 
Reply #1 - Oct 2nd, 2018 at 6:52am

69Shark   Offline
YaBB Administrator
ATTITUDE is the diff between
ORDEAL and ADVENTURE!
69shark

Gender: male
Posts: 7115
*****
 
You will get a variety of opinions here with this question!

I will give you my experience.
Overheating? Yes. SB 383 stroker at the time.

I went with removing the original fan clutch and fan and installed a high capacity electric fan. It worked well however the mounting of the fan through the radiator was a mistake. In time it created a leak. YIKES. I will never do that again.


SO I took my 69 to an old school radiator shop. Explained my concerns and what I had done.

The radiator guy asked if I race the car. Nope I do not.
In short he re-cored my original radiator with a 4 core high flow setup and double the cooling veins. This just about doubled the weight of my radiator.

Once installed I put back a new fan clutch and original fan. Made sure all the radiator gaskets were installed as well as the shroud properly installed.

My car then went 11 years without ever over heating!

( could could not leave well enough alone and am again making changes! LOL! )

Just my experience. Take from it what you will.

Scott











 
IP Logged
 
Reply #2 - Oct 2nd, 2018 at 10:03am

68-73-77   Offline
YaBB Administrator
NCRS Member 68,73,77 Corvettes
Newark,Delaware

Gender: male
Posts: 8394
*****
 
My 68 BB runs at 168-174 all day long even with the air on...had it for 16 yrs now.  Went with a Dewitt large 2 core alum radiator & a 10,000 rpm flex fan.  The fan must be placed perfectly 1/2 in & 1/2 out  looking down from the schrod . Also all air spaces from the front of the engine must be blocked so all air has to go through the radiator.  I also use distilled water, 25% antifreeze & 2 bottles of water wetter. Do theses things & you never have a heating problem again.
Alan Smiley


 
IP Logged
 

Copy Rights and Trademarks Disclaimer: The Corvette name is a copyrighted trademark / sales mark of the Chevrolet Motors Division of General Motors. Any use of the Corvette name at this site is used only as a point of reference to their automobiles or automotive products line of the same name. No copyright / trademark / sales mark infringements are intended or implied. This web site is independently operated as a free informational service for the benefit of Corvette Owners and other interested parties. Neither the Chevrolet Motor Division nor any other segment of General Motors or its affiliates or subsidiaries shall bear any responsibility whatsoever for its content.

CorvetteC3.com Privacy Policy: Some or all of our partners, affiliates, advertisers and other associates may collect, serve and/or use computer cookies to enhance user experiences. Cookies are generally not considered "problematic" or harmful. However, please be advised that "cookies and IP related information" are being collected, tracked and used while visiting and using our website. By using and visiting www.corvettec3.com, you agree to be bound by the terms contained herein. Clearing Web Browser Cookies. We use third-party advertising companies to serve ads when you visit our website. These companies may use information (not including your name, address, email address, or telephone number) about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, click here.