Corvette Parts Blog

Upgrade your 1955-1968 Corvette cooling system with a Direct Fit Aluminum Radiator:

1955-1982 Factory Corvette Radiators do not age well; GM did not design them to last longer then 10 years so if the coolant is not flushed out regularly, dissimilar metals in the cooling system and inefficient anti-corrosion inhibitors lead to internal structural failure. This will ultimately lead to a loss of heat transfer from the built-up deposits inside the radiator tubes leaving you with a hot running Corvette. If your 1955-1982 Corvette is running hotter than you think it should and you have a factory style radiator installed then a direct-fit aluminum radiator may be in your future to solve your Corvette’s Cooling System problems.

Corvette Radiator

Aluminum radiators have become the standard for Corvettes because of their lightweight and durable structure. Some factory Corvette radiators are made of aluminum (Original 55-82 radiators were copper/brass EXCEPT for 61-62, 63-67 327 & 68-72 350 4sspd w/o AC. They were originally aluminum.) and would work great if they had a larger core, were not sealed with simple crimp tabs, and did not have plastic end-tanks, but they are all made this way. With that said, the ideal Corvette Radiator would have a larger aluminum core and be completely welded together to make a complete one-piece unit. Many aftermarket aluminum radiators do cool much more efficiently then the stock Corvette Radiator but will fall into one of two categories: Epoxy sealed and those that are not truly “Direct-Fit”
Epoxy: Some use epoxy to seal the coolant lines running to and from the end-tanks. Though it may seem like one complete unit it can still be highly susceptible to leaks once this epoxy breaks down. When this happens it is back to square one shopping for another radiator all over again. Not Truly Direct-Fit: There are other aluminum radiators manufactured without the use of epoxy and because of the excellent craftsmanship they will keep your Corvette running cool for a long time. The problem is you will not be spending a nice Saturday afternoon installing them. Many will require multiple modifications some even to the extreme of manually bending the brand new radiator to make it fit your Corvette. Although they may be advertised as an “easy fit” they are not truly “Direct-Fit” Radiators.

Direct Fit Aluminum Radiator End Tank vs. Factory Radiator End Tank

The one and only flawless 1955-1982 Corvette Radiator on the market is the Direct Fit Aluminum Radiator from Zip Corvette. They install into the stock mounting locations and use the factory connections without any modifications or adapters. Each Direct Fit Radiator starts with a USA made core that is furnace brazed in a force nitrogen furnace. They feature two rows of 1″ cooling tubes (which will help double the cooling capacity of your stock radiator), a serpentine fin, and are epoxy free. Each Direct Fit tank is manually tig-welded by expert craftsmen, providing the ultimate in strength and appearance.
View the image to the right to see how close the Direct Fit Aluminum Radiators are to the factory radiators in design. As you can see the only difference is the color. If this one turnoff is keeping you from upgrading to a Direct Fit Aluminum Radiator then Zip Corvette has a solution. We can have your new Direct Fit Aluminum Radiator coated with “Black Ice” before it leaves the warehouse. This will give you the added performance of a Direct Fit Radiator and the looks of a stock GM radiator installed from the factory. The Black Ice Coating is not a costly addition to any new Direct Fit Radiator and will not increase or decrease the performance levels at all.

1968-1982 Corvette Radiator "Hood Relief"

When it comes down to the ultimate cooling decision, you want to know that the radiator you are about to spend hundreds of dollars on is going to be a good fit for your Corvette. There are many companies that provide aftermarket Corvette Radiators; but there are very few who offer radiators specifically made for Corvettes. All Direct Fit Aluminum Radiators purchased from Zip Corvette are guaranteed to be manufactured by Corvette enthusiasts for Corvette enthusiasts.

To the right is another example of the detail and correctness included in the design of all Direct Fit Corvette Radiators. This photo shows the “hood relief” that GM stamped in every 68-82 Corvette Radiator. Without this small flat spot, your hood may not close all the way. Our C3 Corvette Direct Fit Aluminum Radiators are the only performance aluminum radiators on the market that have this relief. It is the small details that make a true Direct-Fit Radiator the best choice for your Corvette.

With so many different options available on 1955-1982 Corvettes it only makes since to install a radiator that has been designed with all of these options taken into consideration. Zip Corvette’s Direct Fit Aluminum Radiators are top of the line; do not settle for a cheaper radiator because in the end you could get stuck with a bigger drain than what you started with.

Related posts:

1. Direct Fit Aluminum Radiators For 1984-2009 Corvettes
2. New Shark Bite Suspension For 1963-1982 Corvettes
3. How do you adjust the windshield wipers on 1968-1982 C3 Corvettes
4. Corvette Restoration Tip: Aluminum Valve Covers
5. Corvette Restoration Tip: Aluminum Dash Insert

Core, Corvette Cooling, Corvette Direct Fit Radiator, Corvette End Tanks, Corvette Overheating, Corvette Radiator, GM, Performance