DeWitt radiator
Thread Starter
Racer
Joined: May 2014
Posts: 429
Likes: 278
From: key largo
DeWitt radiator
I have installed a dewitts radiator and 180- thermostat for about a month now in florida heat I run at a185 at 60 mph and in traffic at 95 degrees it never hits 200,i have been waiting to track it in cooler weather,has anyone tracked a m7 zo6 with the dewitts yet in high temps and how was the temps?
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
I have installed a dewitts radiator and 180- thermostat for about a month now in florida heat I run at a185 at 60 mph and in traffic at 95 degrees it never hits 200,i have been waiting to track it in cooler weather,has anyone tracked a m7 zo6 with the dewitts yet in high temps and how was the temps?
Dewitts should be who GM gets their corvette radiators from to start with. Superior quality, vastly better cooling, factory fit.
Burning Brakes
Joined: Feb 2007
Posts: 929
Likes: 89
From: Bend Oregon
Did you have to make any small mods to make it drop into the space? One person said they had to do some minor adjustments. Who did you buy your 180 stat from?
How much time did it take?
I've done Dewitt's on a couple of other vetts and the work great.
Thanks for sharing your info. Our temps in my town are currently 95 degrees and temps are 200 to 206 running driving as a grandpa.
I have a a8
How much time did it take?
I've done Dewitt's on a couple of other vetts and the work great.
Thanks for sharing your info. Our temps in my town are currently 95 degrees and temps are 200 to 206 running driving as a grandpa.
I have a a8
Pro
Joined: Feb 2002
Posts: 549
Likes: 25
From: Charleston SC
I am sure Unions and Suppliers wouldn't like that one bit. But I agree with you. They should go with what works.
Thread Starter
Racer
Joined: May 2014
Posts: 429
Likes: 278
From: key largo
dewitts install
Did you have to make any small mods to make it drop into the space? One person said they had to do some minor adjustments. Who did you buy your 180 stat from?
How much time did it take?
I've done Dewitt's on a couple of other vetts and the work great.
Thanks for sharing your info. Our temps in my town are currently 95 degrees and temps are 200 to 206 running driving as a grandpa.
I have a a8
How much time did it take?
I've done Dewitt's on a couple of other vetts and the work great.
Thanks for sharing your info. Our temps in my town are currently 95 degrees and temps are 200 to 206 running driving as a grandpa.
I have a a8
Thread Starter
Racer
Joined: May 2014
Posts: 429
Likes: 278
From: key largo
summit
It bolted right in no mods there was a post from someone else about breaking the tabs on the a/c condenser Do not do that if you push in on the top tab the a/c condenser slides upward it is a plastic clip,it took about 2 hours with the coolant fill and warm up it is a direct fit.i got the thermostat from lingenfelter 180 is perfect it runs at 182 to 185 with airflow and keeps the computer from pulling timing at 194,also no codes from being to cold like the 160 therm in cold weather,i have a halltech intake and ported throttle body also the car has been dynod twice 627rwhp 640rwtq best runs hot runs 613/618
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Thread Starter
Racer
Joined: May 2014
Posts: 429
Likes: 278
From: key largo
fan programming
the temps do come down fast when the fans are on so that would help,i am trying my hardest to not tune the motor for warranty purposes,this way I can keep all the power the car has without the computer pulling timing and killing power,when the motor is heat soaked the dyno runs where around 585 rwhp,i also have the fasterproms intercooler tank on the car.
Safety Car
Joined: Jun 2000
Posts: 4,685
Likes: 78
From: Winter Garden (central),FL,USA
Le Mans Master
Joined: Dec 2005
Posts: 8,475
Likes: 332
From: Port Arthur, Texas 77642
At one time Team Corvette had Dewitts stickers somewhere on the race car. Can't remember if C6R or C7R. Maybe someone here can verify?
Melting Slicks
Joined: Jan 2003
Posts: 3,475
Likes: 58
From: California CA
St. Jude Donor '14-'15
I broke the tabs on my "old" factory radiator to get it out, not the tabs on the condenser. The Dewitt's radiator does just slide in and does have heavy duty steel tabs for the condenser, so I didn't care about the old factory radiator.
I overheated in 90' temps at the track. I haven't had the time to review it or track it yet with new radiator in. I also posted in the tech section how to do the install.
I overheated in 90' temps at the track. I haven't had the time to review it or track it yet with new radiator in. I also posted in the tech section how to do the install.
Former Vendor
Joined: Jan 2000
Posts: 5,593
Likes: 631
From: Brighton
We were the supplier to Pratt Miller (GM corvette racing) for all C6 model track cars. During this period they did not have one radiator failure, including several 24 hr Lemans races. They switched to a custom micro ported heat exchanger that is used in Indy cars a couple years ago.
Thread Starter
Racer
Joined: May 2014
Posts: 429
Likes: 278
From: key largo
radiator tabs
I broke the tabs on my "old" factory radiator to get it out, not the tabs on the condenser. The Dewitt's radiator does just slide in and does have heavy duty steel tabs for the condenser, so I didn't care about the old factory radiator.
I overheated in 90' temps at the track. I haven't had the time to review it or track it yet with new radiator in. I also posted in the tech section how to do the install.
I overheated in 90' temps at the track. I haven't had the time to review it or track it yet with new radiator in. I also posted in the tech section how to do the install.
Thread Starter
Racer
Joined: May 2014
Posts: 429
Likes: 278
From: key largo
Melting Slicks
Joined: Mar 2005
Posts: 2,202
Likes: 15
From: Keswick Ontario
We were the supplier to Pratt Miller (GM corvette racing) for all C6 model track cars. During this period they did not have one radiator failure, including several 24 hr Lemans races. They switched to a custom micro ported heat exchanger that is used in Indy cars a couple years ago.
Your rads are boffo! I put one in my 1966 427 restoration. No cooling issues ever.
Curious to compare the cooling capacity of the rad you supplied to the C6R program for the normally aspirated 336 cu. in. 491HP normally aspirated engine vs the 376 cu. in. 650 HP forced induction in the new Z.
Also curious about specs of your current offering vs stock.......
Melting Slicks
Joined: Apr 2010
Posts: 2,790
Likes: 108
From: On the coast North of SF bay
Hey Tom, thanks for the info. A couple of questions:
Do you have any test results from actual Z's under race conditions of some kind?
And are the radiators the same for the M7 and A8?
TIA,
Nick
Do you have any test results from actual Z's under race conditions of some kind?
And are the radiators the same for the M7 and A8?
TIA,
Nick