Radiator replacement - 79 Trans Am - 403 - Second Generation Pontiac Firebird (1970 - 1981) - Firebird Nation

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Radiator replacement - 79 Trans Am - 403

radiator 1979 403

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#1 jvmagic

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Posted 13 March 2020 - 01:16 PM

Hi,

 

After replenishing my radiator a few week ago with fresh coolant etc it now started to leak.   :-(
Would there be a reason for this? Meaning, if it was overfilled etc? The leak is from the radiator itself (bottom driver side from what I can see).

 

My car is low mileage stock 403. I want to replace it with a drop in type of radiator (don't want to change anything else if at all possible).

I've read some older posts but I want to gather new suggestions as there may be other options available now.

 

The below is what I have read about and want to get your take on as well as other available options you can recommend.

 

CARQUEST Radiator

LIMITED LIFETIME REPLACEMENT
Part # 433477
$192 after 25% rebate

 

Champion Cooling

3 Row All Aluminum Radiator, CC573
https://www.amazon.c...r/dp/B007WVWTWW

 

Thank in advance.


Edited by jvmagic, 13 March 2020 - 01:20 PM.


#2 1973-Formula

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Posted 14 March 2020 - 06:15 AM

Sounds like it held up for many years already...

Not using distilled water is the worst enemy of a cooling system, the minerals and salts it contains corrode anything they touch. If not used daily it's even worse.


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#3 jvmagic

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Posted 14 March 2020 - 09:05 AM

I always use distilled water with a 1-to-1 ratio. Is this correct?

#4 07 Boss

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Posted 14 March 2020 - 01:31 PM

http://www.speedcool...AiABEgJqu_D_BwE



#5 Aus78Formula

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Posted 14 March 2020 - 04:12 PM

Why go backwards

#6 ponyakr

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Posted 14 March 2020 - 06:03 PM

I've read that with alum rads, 2 rows of WIDE tubes, 1" or wider, cool better than 3 or 4 rows of narrow tubes. 

 

Some like the Cold Case brand rads because, when painted, they look more like factory. 

 

Looks like the GPF18 fits most '70-'81 manual trans 2nd gen Birds, & the GP18A fits most auto trans models.

 

https://www.coldcase...rmance-radiator

 

https://www.coldcase...rs.com/node/164

 

Don't know the cheapest vendor. At the price, if you can still find an online seller that ships free & don't charge tax, that might be the best price.

 

At the time of this post, this Ebay seller shows the GPF18A for $351 shipped, with no tax added. 

 

https://www.ebay.com...5.c100005.m1851


Edited by ponyakr, 14 March 2020 - 06:14 PM.


#7 Aus78Formula

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Posted 14 March 2020 - 06:08 PM

Apart from the angled filler cap area, you probably won't see much else. Painted or not, many others are much more factory looking but what you see is till the same. They appear to be decent quality and at least have a brand name attached, have good feedback from owners.







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