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Highest Coolant Temps?

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Old Jul 2, 2009 | 04:49 PM
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Default Highest Coolant Temps?

I was wondering what the highest coolant temp anyone has seen.
After making a couple of runs today at 97 degrees my coolant temp got to 239.

Bill
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Old Jul 2, 2009 | 05:06 PM
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Like I was told yrs ago, "Your search option is your best friend"

The highest I have seen is 230ish with an ECS kit...
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Old Jul 2, 2009 | 05:07 PM
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Bill, I assume that is with the stock radiator. If so, upgrade to a dual core Dewitts.
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Old Jul 2, 2009 | 05:12 PM
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Originally Posted by BADZ
Like I was told yrs ago, "Your search option is your best friend"

The highest I have seen is 230ish with an ECS kit...
Thank you. I did do a search but it comes up all over the place. I was wanting up to date info with all the new superchargers and products out there now.

Thanks
Bill
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Old Jul 2, 2009 | 05:13 PM
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Originally Posted by wwbill617
I was wondering what the highest coolant temp anyone has seen.
After making a couple of runs today at 97 degrees my coolant temp got to 239.

Bill
Mine was close to that the other day! Ordered a DeWitts radiator and I'm going to order a vented hood soon.
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Old Jul 2, 2009 | 05:15 PM
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Originally Posted by PAUZAO
Bill, I assume that is with the stock radiator. If so, upgrade to a dual core Dewitts.
Pauzao,

No not stock. I have the Dewitts radiator. I am running a 402 forged short block with Heads/Cam/T-trim/A&A fuel system/Meth injection/Headers ect.ect. 702rwhp/664rwtq.

Thanks Bill
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Old Jul 2, 2009 | 05:46 PM
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Originally Posted by wwbill617
Pauzao,

No not stock. I have the Dewitts radiator. I am running a 402 forged short block with Heads/Cam/T-trim/A&A fuel system/Meth injection/Headers ect.ect. 702rwhp/664rwtq.

Thanks Bill
Wow, so you do have the DeWitts and meth, which should cool your intake charge down and the IAT's as well. Make sure that everything is functioning properly. My only other suggestion would be to lower the boost a little? How old is your A&A set-up? Does it have the new and improved ram-air intercooler? 97 degrees is not that hot. Can you imagine if the tempts get well into the 100's?
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Old Jul 2, 2009 | 06:43 PM
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250 in traffic on a 90 degree day.
GM
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Old Jul 2, 2009 | 06:49 PM
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Originally Posted by gmoller
250 in traffic on a 90 degree day.
GM
GM, that is EXTREMELY high. I would definitely not be comfortable with anything above 220 degrees.
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Old Jul 2, 2009 | 06:56 PM
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I know, I'm gonna install a new 160 thernostat and reset the fan speeds soon.
GM
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Old Jul 2, 2009 | 07:07 PM
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215* sitting in Texas 103* sweltering heat!!!
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Old Jul 2, 2009 | 07:09 PM
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Originally Posted by Mr.Big
215* sitting in Texas 103* sweltering heat!!!
Not bad at all, especially considering your boost and power level.
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Old Jul 2, 2009 | 07:21 PM
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201 is the highest I've seen so far, now granted I haven't many back to back WOT runs. Fans are set to constant on under 35 mph and start at the lowest possible setting.
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Old Jul 3, 2009 | 06:03 AM
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235 on stock radiator and Kb setup. Need a Dewitts ASAP. Just need to figure out which one to order. I have the Z51 package, but the tranny cooler is junk and my trans gets hot because my radiator just heat soaks the hell out of it. Anyways I guess I can go with a Dewitts without a trans cooler, then just get an aftermarket trans cooler, but the question is do I stick with one that has an oil cooler too? Sorry, thread jack.
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Old Jul 3, 2009 | 06:22 AM
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My son e-mailed DeWitts. They were very heplful and explained things and told him which radiator to order. It's on it's way. Also ordering a vented hood to let out some of the heat.

Last edited by RareSS9596; Jul 3, 2009 at 06:25 AM.
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Old Jul 3, 2009 | 07:55 AM
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Stock radiator, 180 thermo, Lingenfelter TT hood (ie: BIG *** scoop), ECS kit...

My temps stay in the 180s-190s when cruising around in the 80-90 degree temps we've had thus far this year....beating on it a little gets it up to about 200. I'm not sure what REALLY ******* it hard would do in those temps, but I can't imagine it would go too much higher than 210-215. The hood seemed to lower operating temps an average of 4-5 degrees.
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Old Jul 3, 2009 | 11:22 AM
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Originally Posted by PAUZAO
Wow, so you do have the DeWitts and meth, which should cool your intake charge down and the IAT's as well. Make sure that everything is functioning properly. My only other suggestion would be to lower the boost a little? How old is your A&A set-up? Does it have the new and improved ram-air intercooler? 97 degrees is not that hot. Can you imagine if the tempts get well into the 100's?
Pauzao,

Thanks for your response. My Set up is brand new (2 weeks) I do have the improved ram-air intercooler and am running 10-11lbs. With the hp I am getting I think the intake air is cool enough but there may be someting up with the cooling system. Maybe air? Maybe a blockage in the cooling passages on the new block? I don't know.

Bill
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Old Jul 3, 2009 | 01:17 PM
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Originally Posted by wwbill617
Pauzao,

Thanks for your response. My Set up is brand new (2 weeks) I do have the improved ram-air intercooler and am running 10-11lbs. With the hp I am getting I think the intake air is cool enough but there may be someting up with the cooling system. Maybe air? Maybe a blockage in the cooling passages on the new block? I don't know.

Bill
Bill, I think that you are correct. You may be experiencing an issue somewhere in the cooling system. You have a DeWitts radiator, you are not running excessive boost, you are running meth, and you have the new and improved ram air intercooler. You should not be running that hot with your set-up.
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Old Jul 3, 2009 | 02:29 PM
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Originally Posted by wwbill617
Pauzao,

No not stock. I have the Dewitts radiator. I am running a 402 forged short block with Heads/Cam/T-trim/A&A fuel system/Meth injection/Headers ect.ect. 702rwhp/664rwtq.

Thanks Bill
How new is your forged block? I just added Diamond Forged Cylinders and my SC car temp went from average 210 (after spirted driving) to 230. I have been told the break-in on forged cylinders is 5K miles . from a VERY trustworthy source. I am running Rotella break-in oil for the 1st 5K miles and the (thank God) switching back to Royal Purple. I should then see my temps drop back to close to normal levels.
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Old Jul 3, 2009 | 08:43 PM
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Wow i was worried the other day when my coolant was 203 and oil temp was 215 after a few spirited pulls. Guess nothing to worry about.
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