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Old Nov 12, 2007 | 09:00 PM
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Default Dewitts Radiator...

My UPS guy just dropped mine off today...

Direct from Dewitts. Also got my new waterpump and coolant tank from Gene Culley last week.

At 125k, its time for some new cooling.

Any users and how are they holding up?

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Old Nov 12, 2007 | 09:03 PM
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two thumbs up for DeWitts!!!

Great radiators and their great customer service is second to none!
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Old Nov 12, 2007 | 10:01 PM
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Originally Posted by SpeedyZ
two thumbs up for DeWitts!!!

Great radiators and their great customer service is second to none!
Great radiator, price and customer service. Thanks Tom!
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Old Nov 13, 2007 | 10:03 AM
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Put One In My C4. Never Had A Worry. Worked Great!!
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Old Nov 13, 2007 | 10:21 AM
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Originally Posted by Purerock105
My UPS guy just dropped mine off today...

Direct from Dewitts. Also got my new waterpump and coolant tank from Gene Culley last week.

At 125k, its time for some new cooling.

Any users and how are they holding up?

,I would like to see a pic of the old one & The New one side by side ,Did U opt for the Eoc or no ? ?, ,I think Both the Ron Davis & The Dewitts are Both nice Systems I wonder Who Makes the better radiator ,I will Be Buying one soon as well .I went to RonDavis Site ,His Prices are not included ,Looks like the eoc & Toc will Raise the Price of Both

Last edited by fsuforever; Nov 13, 2007 at 10:39 AM.
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Old Nov 13, 2007 | 10:23 AM
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Hey Mark..don't forget what I told ya about trimming that shroud a bit more on the driver side....its a PITA but you will probably have to cut and test fit and trim up a bit. Mine dropped my temps about 20 degrees...
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Old Nov 13, 2007 | 10:45 AM
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How does the Dwwitts Radiator differ from the stock one?
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Old Nov 13, 2007 | 10:54 AM
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Originally Posted by TheRadioFlyer
How does the Dwwitts Radiator differ from the stock one?
The dewitts has twice the Cooling Capacity as the stock Unit
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Old Nov 13, 2007 | 12:37 PM
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Easy install, great performer. I actually took mine to the speed shop and found some trans cooler to AN fittings so I would have them when I am ready for an external trans cooler (when I get a free few hours to install!!!).

I actually polished mine on a wheel (side tanks) but you can't see it under the shroud. My fans dropped right in without trimming (04) but I did as directed. Overheating seems to be a myth with these things installed. Seriously, they are like three times the thickness of the stock ones. GM should be embarrased for using the one they install. Maybe "performance cooling package" should have been a factory option...?

Way to go. You'll have it popped in within a few hours.

Cassidy
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Old Nov 13, 2007 | 12:49 PM
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We have a pdf download from an article called "Twice as Ice". It shows the differences, install tips, and details on the shroud trimming. A lot of guys just skip the shroud trimming because it's still fits without doing it. I'm just **** and wanted everything just right.

http://www.dewitts.com/download/TwiceAsIce.pdf
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Old Nov 13, 2007 | 03:51 PM
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Tom - Just curious, Does your twin fan setup (SP015) use SPAL fans?
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Old Nov 13, 2007 | 05:00 PM
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Originally Posted by TheRadioFlyer
Tom - Just curious, Does your twin fan setup (SP015) use SPAL fans?
Yep, dual 12's. 3200 cfm total
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Old Nov 13, 2007 | 06:13 PM
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Originally Posted by fsuforever
,I would like to see a pic of the old one & The New one side by side ,Did U opt for the Eoc or no ? ?, ,I think Both the Ron Davis & The Dewitts are Both nice Systems I wonder Who Makes the better radiator ,I will Be Buying one soon as well .I went to RonDavis Site ,His Prices are not included ,Looks like the eoc & Toc will Raise the Price of Both
Here you go, I went with the EOC but still have not hooked it up and its been a year, as my oil temps don't worry me yet. I should have gotten one without I guess.




And it slides right in:
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Old Nov 13, 2007 | 06:35 PM
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I Am impressed ,very nice radiator
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Old Nov 13, 2007 | 08:12 PM
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In the "twice as ice" article, They said the high temp of th C5 was partially related to emissions. How is this? Also if this is the case then why doesn't an aftermarket cooling setup affect emissions?
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Old Nov 13, 2007 | 08:17 PM
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In the area where the 'fan' shroud may have to be trimmed?

Is this the main shroud part, and not the shroud cover? Like the pretty one in this pic...

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Old Nov 13, 2007 | 08:35 PM
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Originally Posted by Purerock105
In the area where the 'fan' shroud may have to be trimmed? Is this the main shroud part, and not the shroud cover? Like the pretty one in this pic...
I'm not sure if you wanted to show off that cover or clarify the trimming but the cover does NOT get touched. If you open the link above, you will see exactly what is trimmed and why.
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Old Nov 13, 2007 | 08:51 PM
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Originally Posted by Tom DeWitt
I'm not sure if you wanted to show off that cover or clarify the trimming but the cover does NOT get touched. If you open the link above, you will see exactly what is trimmed and why.
A little of both maybe.

Thanks...Tom
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Old Nov 14, 2007 | 08:48 AM
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Originally Posted by Purerock105
A little of both maybe.

Thanks...Tom
you ain't got that thing in yet??

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Old Nov 14, 2007 | 01:04 PM
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Originally Posted by TheRadioFlyer
In the "twice as ice" article, They said the high temp of th C5 was partially related to emissions. How is this? Also if this is the case then why doesn't an aftermarket cooling setup affect emissions?
The lower temp you run your motor at the more unburned fuel there will be, that is the impact on emissions. Using a Dewitts will not in itself cause emissions issues, the thermostat and the fan settings will effect the normal operating temp more than the radiator. Think of it this way, a Dewitts radiator will provide a LOT of cooling capacity, but the thermostat regulates how much of the capacity you will use at any moment. When you are say racing, the thermostat will use alot of the radiator's capacity, but around town it uses less. That is, you can set up the thermostat and fans to make the Vette run at a temp near the normal operating temps so that emissions will be OK.

I just went through this, I failed the Denver emissions because of unburned fuel on the sniffer test. I put the stock thermostat back in and raised the fans to the normal on/off settings and the unburned fuel measurements dropped by more than half and I passed. And at the road race track this past weekend the temps never went high enough to activate the fans

Matt
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