DeWitt's Radiator
Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
DeWitt's Radiator
I am thinking about upgrading the radiator in my 07 6 speed manual non Z51 A&A vette. The car right now doesn't really get over 220 in really warm weather but the fans need to run almost constantly. I really don't like relying on the fans to cool the car plus they sound horrible too. What do you think a standard radiator (no internal coolers) will do? Will it keep the car under 200 degrees without much use of the fans? I also want a little more clearance between the blower intake and the top of the radiator too so the installation looks a little better.
Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
here you go
http://forums.corvetteforum.com/c6-f...ns-cooler.html
I agree with the fan noise being bothersome
http://forums.corvetteforum.com/c6-f...ns-cooler.html
I agree with the fan noise being bothersome
Melting Slicks
Joined: Dec 2002
Posts: 2,897
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From: Lone Star State
Some guy's say stay with stock to get more air up thru the extra space but I went with a Dewitts to try it out, there was not much difference in temps. Wooden is correct on the fans running constantly in the hot summer time...
Last edited by BADZ; Feb 24, 2010 at 08:41 AM.
Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
I'm not a big fan of electric water pumps on street cars. I just ordered the Dewitts so we will see what happens. At the least it will make the installation look a little better. I was definitely not a fan of cutting the stock radiator and folding over the flange on the top to make the intake fit into the blower.
Former Vendor
Joined: Jun 2006
Posts: 1,622
Likes: 3
From: Dallas TX
I'm not a big fan of electric water pumps on street cars. I just ordered the Dewitts so we will see what happens. At the least it will make the installation look a little better. I was definitely not a fan of cutting the stock radiator and folding over the flange on the top to make the intake fit into the blower.
Main benefit is that you get FULL FLOW at idle. Not progressive flow with RPM like mechanical pumps.
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Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
Just like almost everything else on the LS engines, these are different. Don't compare to old school SBC stuff. The EWP's work perfectly fine on the LS engines on street cars. I have never seen one fail. And they make zero noise.
Main benefit is that you get FULL FLOW at idle. Not progressive flow with RPM like mechanical pumps.
Main benefit is that you get FULL FLOW at idle. Not progressive flow with RPM like mechanical pumps.
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
I run a Ron Davis radiator, 160 t'stat, stock fans and a big oil cooler on my ProCharged 2005. I also use the Meziere EWP. It flows a constant 55 gph, the stock pump pushes 22 gph @ 5000 rpm. In summer heat, ac @ 100%, I see coolant temps around 190, and oil temps around 200. Thats at highway speeds. Around town, the temps run 10 to 15 degrees less. I can sit in traffic when it's 110 outside and never overheat.
Former Vendor
Joined: Jun 2006
Posts: 1,622
Likes: 3
From: Dallas TX
Electric water pumps are around $650.
Melting Slicks
Joined: Jun 2006
Posts: 2,690
Likes: 1
From: Northern Calif
I run a Ron Davis radiator, 160 t'stat, stock fans and a big oil cooler on my ProCharged 2005. I also use the Meziere EWP. It flows a constant 55 gph, the stock pump pushes 22 gph @ 5000 rpm. In summer heat, ac @ 100%, I see coolant temps around 190, and oil temps around 200. Thats at highway speeds. Around town, the temps run 10 to 15 degrees less. I can sit in traffic when it's 110 outside and never overheat.
Melting Slicks
Joined: Jul 2007
Posts: 2,582
Likes: 102
From: Flint, MI
Just like almost everything else on the LS engines, these are different. Don't compare to old school SBC stuff. The EWP's work perfectly fine on the LS engines on street cars. I have never seen one fail. And they make zero noise.
Main benefit is that you get FULL FLOW at idle. Not progressive flow with RPM like mechanical pumps.
Main benefit is that you get FULL FLOW at idle. Not progressive flow with RPM like mechanical pumps.
Take a stock Z06 and put a 160 thermostat in it and cruise down the highway at 70 mph it will run 180 something. Then, keep going 70 but downshift to 5th to speed up the stock water pump a little bit and the engine temp will drop lower than it will ever reach if you leave it in 6th.
The ZR1 is the same way. I use that trick all the time to get as much heat out of my engine as I can before I run someone from a roll, on a closed track of course.
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
In traffic, the engine does not generate as much heat energy as when it's working hard at speed, and my cooling system so eficient that I do experience lower coolant and oil temps at slow speeds.
