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Old Jan 31, 2014 | 11:02 PM
  #21  
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I bought a Champion from the Bay and worked out well,what I hated the most was putting in that F****n shroud!!!!!!!! Who ever designed that should be hung by the short hairs!
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Old Feb 1, 2014 | 01:29 AM
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comments like that make me glad that I have an electric fan, when I bought the car the shroud was completely gone
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Old Feb 1, 2014 | 07:01 AM
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Originally Posted by scrappy76
Bought a Champion 3 core for my 76' with a big block conversion. It fit fine and so far cooling fine. All hoses fit and I can turn the petcock if need be. $ 200 to my door. I am fine with that. Nobodys perfect and I am sure Dewitts has had a few returns.
I have used the Champions...Go to the web site and buy direct.

They are quality and fit was fine on my 78. I also have one in my 53 prostreet PU.

If you have lots of money and want to go TOP SHELF..by all means

Champion is a quality product

GOOD LUCK
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Old Feb 3, 2014 | 08:01 PM
  #24  
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For those of you that installed a 2 row Champion, what kit did you use for providing the seal between it and the radiator core support?
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Old Feb 3, 2014 | 08:39 PM
  #25  
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i used a couple layers of 3/8 x 2" armaflex insulation tape. worked well
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Old Feb 3, 2014 | 08:51 PM
  #26  
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Originally Posted by Plasticfreak
I bought a Champion from the Bay and worked out well,what I hated the most was putting in that F****n shroud!!!!!!!! Who ever designed that should be hung by the short hairs!
remove the hood, move the support forward by removing 3 support screws/side.....maybe two on bottom support, not that they are needed....and the fan....shroud is now easy removal.....

the when it is out, you cut it about 1/2 way up each side, making a top/bottom 1/2.....on the bottom 1/2 you take some aluminum bar material and make a sandwich with fingers sticking up to slide the top 1/2 in place, that makes it align and keep in position....two of those finger slots per side.....I have done this on several cars, works fine, and was on my '72 vette for years also....

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Old Feb 4, 2014 | 02:15 AM
  #27  
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I looked at these and the pics others had taken of them. Seem hit and miss and quality is no where near acceptable. I saved the extra cash, waited for the sale and ordered my Dewitts. Just not into putting low end stuff into the car. Would have just kept my original rather than a less than aluminum. If its a needed replacement, and equal or less than $$ than a stock radiator that might be the only time I would get one. For me it was the cooling I was looking for.
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Old Feb 4, 2014 | 07:31 PM
  #28  
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OK. I've said this before...unless you are concerned about weight, copper dissipates heat better than aluminum. I doubt that many out there are racing at a level where the weight difference between aluminum and copper is a factor.

Zip corvette sells a 2 5/8" (four core) brass and copper radiator for a 79 vette (my year) for $400. An aluminum replacement from the same company is $500...
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Old Feb 4, 2014 | 08:52 PM
  #29  
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Originally Posted by MajD

Zip corvette sells a 2 5/8" (four core) brass and copper radiator for a 79 vette (my year) for $400. An aluminum replacement from the same company is $500...
Zip sells this budget Dewitts for $400 also:

http://www.zip-corvette.com/ProductD...GR-SR&CTitle=&

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Old Feb 4, 2014 | 09:49 PM
  #30  
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Direct from Dewitts was a bit over $400 with their sale and the issue is not only dissipation but design, and manufacturing quality. Just seems a ton of satisfied customers with testimonials counts for something. Will be sure to post my experience here. My entire cooling system is good and this is the only change so if I get a temp drop we can safely say it is the radiator swap that can be credited. Current one is not damaged or plugged. That being said would be good to see a direct comparison between like products with the only difference being the materials.
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Old Feb 4, 2014 | 10:09 PM
  #31  
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I put a Champion in my 80 when it had the engine and trans in my signature in it. Fit right in and I used the stock shroud and mechanical fan. Ran cool, never hot.

I bought a Champion for my 75 and test fit it before I took the car apart. It fits as well as any other aftermarket radiator I have seen.
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Old Feb 4, 2014 | 11:48 PM
  #32  
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Originally Posted by MajD
OK. I've said this before...unless you are concerned about weight, copper dissipates heat better than aluminum. .
True, copper disapates heat better than aluminum...and that's why it creates confusion when us radiator guys tout the performance improvements.

You see an aluminum radiator is made differently than a copper one. Aluminum radiators use a much shorter fin height, which results in more rows of tubes in the same given space. The tubes are also wider, creating more tube-to-fin contact, and finally the aluminum radiator is 100% aluminum. The copper radiators are bonded together with lead, which is a poor conductor. This greatly reduces the heat transfer from the tubes to the fin.

It's more than aluminum vs copper.

Last edited by Tom@Dewitt; Feb 6, 2014 at 09:49 PM.
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Old Feb 6, 2014 | 07:59 PM
  #33  
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Hey Tom! The rad you made for me arrived today. The thing is a work of art. I have never seen welds that nice and it fits like a glove. Sure beats that fleabay Champion I made the mistake of buying....
Thanks!
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Old Feb 6, 2014 | 08:50 PM
  #34  
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Just got mine too and concur on the quality. Also verified the number of and width of tubes compared to my stock radiator. DeWitts had 11 more tubes and all of them wider.
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Old Feb 7, 2014 | 05:06 PM
  #35  
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Originally Posted by Tom DeWitt
True, copper disapates heat better than aluminum...and that's why it creates confusion when us radiator guys tout the performance improvements.

You see an aluminum radiator is made differently than a copper one. Aluminum radiators use a much shorter fin height, which results in more rows of tubes in the same given space. The tubes are also wider, creating more tube-to-fin contact, and finally the aluminum radiator is 100% aluminum. The copper radiators are bonded together with lead, which is a poor conductor. This greatly reduces the heat transfer from the tubes to the fin.

It's more than aluminum vs copper.
Ok. I'm trying this on my phone, so i hope it works.

Tom, thanks for the reply. I like the forum because it always teaches me something. Today i learned a little about radiator construction and the difference between aluminum and copper.


Currently, there is brazing technology that replaces the lead solder and has much better heat transfer properties. I don't know whether its being used by the common vendors, but i doubt it.

Regardless, the three articles i read after getting your post indicated that radiator design was more important than materials and that both metals had their pros and cons. Thanks.
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Old Sep 7, 2016 | 04:01 PM
  #36  
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Any reviews for HPI racing alu radiators ? For example:
http://www.ebay.com/itm/3-ROW-ALUMIN...NUib0X&vxp=mtr
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Old Sep 7, 2016 | 09:32 PM
  #37  
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Originally Posted by boseone
Any reviews for HPI racing alu radiators ? For example:
http://www.ebay.com/itm/3-ROW-ALUMIN...NUib0X&vxp=mtr

Take it easy on the new guy
To answer your question it will probably do the job.the only way you will know if it works in your case is to try it.I've had a champion for several years now and have no complaints.if other manufacturers want to stay in buisness long they will have to make a decent product.
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