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Radiator replacemet options for a 1976 C3

 
Old 05-10-2019, 09:37 PM
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OLE442
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Default Radiator replacemet options for a 1976 C3

I developed a leak on the driver's side of the stock radiator on my 1976 C3 w/automatic tranny. Iím just curious what will be the best way to go. I used to have radiators re-cored back in the day but not sure who is good at that anymore in my area. Re-coring assures you that everything should line up and connect as it did originally but I'd have to find a good repair shop.

If I buy a new oneÖ..where to go to get the best deal on a very good quality radiator. Who are the best sellers? What manufacturers make a radiator as good or better than the original in quality and fitment? What are the better manufacturers? Standard materials or aluminum? My original has kept the car very cool running and hope to have the new one do the same. No overheating at all with my Vette.

Any info, opinions and links and photos would be appreciated.


Thanks,
OLE442

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Old 05-10-2019, 09:50 PM
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Bikespace
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Early or late 76?

Zip has these DeWitts radiators. Mine is still ticking along, otherwise it would have one of these.

Early
https://www.zip-corvette.com/73-76-3...-radiator.html
Late
https://www.zip-corvette.com/76l-82-...-radiator.html
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Old 05-12-2019, 09:44 AM
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Don't toss the old one. I hit a mustang radiator with the fan. Just saw your avatar. Mine was a 70. (One of many.) Fixed leaks in the whole impact ring. Lasted years. There are people would rather have repaired orig than shiny aluminum.

Last edited by derekderek; 05-12-2019 at 09:46 AM.
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Old 05-14-2019, 04:58 PM
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Love my DeWitts
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Old 05-17-2019, 10:12 AM
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Just curious.....is the fitment of the DeWitt's on the money? I assume with the previous post they are well built and should last well?

I'm almost sure I'm going with the DeWitt in stead of repair, re-core but I have to figure out whether it's a "Early" or "Late" 1976 Vette? I thought the window sticker might tell but not!! Looking around, the upper tube is 45 degree angle and the air conditioning compressor is a GM Harrison A6 so mine must be an early.

Also, I'm just thinking of putting it in the car in natural aluminum finish? Any reason to paint it black?

Can I use old style Prestone anti-freeze in the DeWitt or do I need to buy special DeWitt coolant?

One of the previous members posts show them at ZIP Corvette. Is that a good vender to use?
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Old 05-17-2019, 08:58 PM
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OK, ZIP has two different priced versions of their radiators for my 1976 Vette. The car has AC but never gets close to overheating and it's the lower output standard engine. The two are:
https://www.zip-corvette.com/73-76-3...-radiator.html
73-76 350 & 454 Aluminum Radiator $399.00 In Stock and ready to ship
and
https://www.zip-corvette.com/73-76-3...or-4dd707.html
73-76 350/454 w/Auto Direct Fit (HP) Aluminum Radiator for $729.99 and are custom made with a 2 to 3 week wait for shipment.

What is the difference? Is the Direct Fit more for a high performance engine? We're talking $329.00 more for the
Direct Fit radiator? Just curious how well the cheaper DeWitt will fit. I'm not a well to do person and 300 plus dollars is a lot to me. BUT, I don't want to regret buying the cheaper one! Starting to make me reconsider getting the old one repaired/re-cored!

Thoughts and experiences?

Thanks, OLE442
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Old 05-18-2019, 11:01 AM
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Went on and ordered the DeWitts and the coolant with new upper and lower hoses
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Old 05-18-2019, 12:49 PM
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Originally Posted by OLE442 View Post
Went on and ordered the DeWitts and the coolant with new upper and lower hoses
I hope you ordered the cheaper one. AFAIK, the difference between the two is $300-.

Let us know how it works!
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Old 05-18-2019, 01:32 PM
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Yes I did. Since my Corvette has no cooling issues and never gets close to the danger zone, I figure that one will be more than adequate! They say the Direct Fit ones take 2-3 weeks to be custom made and have more cooling tubes. I'll keep the $300.00 and live with this one. Sounds like it's better than factory. Anyone know of a good rattle can paint to paint the aluminum radiator with. They sell a two part epoxy but I'm not screwing with that. I'll leave it raw metal if not!
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Old 05-21-2019, 08:36 PM
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Originally Posted by OLE442 View Post
Anyone know of a good rattle can paint to paint the aluminum radiator with. They sell a two part epoxy but I'm not screwing with that. I'll leave it raw metal if not!
Any ideas of something that will look decent and hold up on aluminum in high temps?
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