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    1. #1
      Join Date
      Feb 2013
      Location
      El Dorado Hills, CA
      Posts
      116
      Country Flag: United States

      Advice needed - LS3 running hot(??)

      Hey guys, I know a lot of you are running LS power and I need some help solving my heat issue. My engine is new (bored and stroked LS3, 418 cu.in.), and only has 250 miles on it. The first 200 miles it never went above 210 but lately it's been hitting 230 on my gauge. I swapped out the factory style thermostat for a MR Gasket brand 180 which states the engine will run cooler. "Not Happening"! So knowing I didn't have an issue at first and all of a sudden started; does anyone have any experienced suggestions? Note: the 230 I'm getting is on a 75 degree day. I'm in Northern CA so will definitely see 100 degree days with my A/C on. I also have an Autorad radiator complete with shroud and 12" and 14" fans. The fans come on at 200. I need to solve this now. Your feedback is much appreciated.

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