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Old 07-28-2014, 08:51 PM   #1
CST10
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Join Date: Sep 2013
Location: Gonzales, La
Posts: 1,441
Can an AC Installed make the engine run hotter than before?

I torture tested my truck cooling system yesterday. I placed it outside in the sun idling with the truck in drive and emergency brake set. I also had the AC blowing wide open with all the windows open to keep the AC running at maximum.

So, Over the winter installed a vintage air system in my truck. Prior to the AC installation the BBC 462 CI engine would run around 180 F degrees. Now, I can't keep it under 210 F degrees. I know 210 F isn't quite overheating yet but it doesn't leave much room for error.

I have a 165 f degree thermostat, new 4 core radiator, new water pump and twin electric fans pulling 4600 CFMs. Hoses have springs, so hose should also be good.

Can the condensor for that AC being in front of the radiator add that much additional heat to the cooling system?

Any ideas what can be done to lower the temperature a little. I know 210 F degrees isn't overheating. I am just not comfortable at that temperature,don't really know if I should be worried or not.
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Goldilocks the "Ol School Survivor" 1968 C10, SWB Stepside, 08/15 TOTM, 250 CI 6 cylinder, 3 on the tree, 3.73 rear, 3/5 static drop, 23,500 original miles.
Samson the 1970 CST10, LWB, 462Ci, Turbo 350 tranny, 3.08 rear gear, PB, PS, A/C, AM/FM, 2/4 Drop.
Brutus the 1998 Camaro Z28, 33,500 original miles, LS1, 519 RWHP/497 RWTQ.
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