Radiator recommendations ?

[ZWILD1]

My son and I plan on making the trip to BG this year and I plan on installing new hoses and was thinking about replacing the factory radiator with a larger aluminum one. Who makes a good radiator to drop in? I replaced the radiator on my first ZR1 and my 96 LT1 car with a factory style but not worried about the car looking original.

[secondchance]

I installed Dewitt Pro Series which has two rows 1" pipes. Much better quality and no longer worried about plastic side tanks busting on OEM radiator.

https://www.dewitts.com/collections/corvette-aluminum-radiators/products/1990-1996-aluminum-radiator

[GOLDCYLON]

Dewitt

[Jagdpanzer]

Dewitt has their annual 15% off sale still going on until February 2nd.



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[Karl]

I purchased a DeWitt radiator on sale over the holidays along with silicone hoses and a new heater core.

[RussMcB]

I went with Dewitt, too. I'm happy with the end result but it was more work than I expected. Afterwards, though, you'll have great peace of mind, especially if you plan to do some laps at the track.

Maybe budget extra time in case you need to walk away from it for a while and take a break.

In other words, don't do it on the Wednesday night before you leave for BG. :-).

[Dynomite]

Ron Davis, Fluidyne, Other Multicore Aluminum......Just to add some choices :p

All perform perfectly :thumbsup:

[ZWILD1]

As I remember the OEM style went in pretty much straight forward. Is the Dewitt more difficult? The thing I hated was changing out the hoses going to the thermostat. I ended up going to Sears back in the day and buying a remote hose clamp tool to make dealing with the factory style clamps easier but it was still a pain.

[ZR1North]

I too went with the DeWitts that others mentioned. Marc did the replacement when he did the 510 pkg. I know he used my original GM hoses. The unit comes with a spacer bar that must be installed because of the rad thickness, but it is easy to install and does not diminish the underhood appearance. That's where my research led me, and I am extremely happy with the product some five years in.

[BlackZR1]

Dewitt has their annual 15% off sale still going on until February 2nd.

Thanks for the tip, just placed my order.
Plastic tank is weeping at the crimped joint.

[BlackZR1]

Today was a good day.
Received my DeWitts radiator and the Registry Membership package

http://zr1.net/forum/picture.php?albumid=451&pictureid=3952
http://zr1.net/forum/picture.php?albumid=451&pictureid=3953

[akool64]

I recently installed a Champion radiator in my 90 ZR1. Part number EC1052. As I remember the price was $168.00.

[secondchance]

Today was a good day.
Received my DeWitts radiator and the Registry Membership package

http://zr1.net/forum/picture.php?albumid=451&pictureid=3952
http://zr1.net/forum/picture.php?albumid=451&pictureid=3953

I know the feeling. Just can’t wait to install, fill with clean green stuff and see how much cooling improvement is achieved.
I have been going through variations of this (engine mod, suspension, new seats, new brakes, so on and on) for the last 10 years. :cheers:

[Jagdpanzer]

Is the green stuff still needed in the LT5 if you’re not running OEM head gaskets?


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[Jagdpanzer]

Nice aluminum workmanship.
Especially like the drain **** and the way it’s angled down. Should make for less mess when draining.


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[George Maz]

I recently installed a Champion radiator in my 90 ZR1. Part number EC1052. As I remember the price was $168.00.
Best bang for the buck, probably will buy this one next.
Have to install Dewitts in '90 ZR-1, then Fluidyne in '96 CE LT-1 auto. I'll let you know how the install fitment turns out.

[secondchance]

Is the green stuff still needed in the LT5 if you’re not running OEM head gaskets?


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I don’t think so. I have always run Prestone (although I don’t think it’s silicate base of late) and had no issue. I woul stay away from orange stuff (OAT base).

[lfalzarano]

Is the green stuff still needed in the LT5 if you’re not running OEM head gaskets?


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I would still run the GM green stuff. The water pump would appreciate the treatment. I switched to it after losing the second water pump. Just my experience!


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