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Hi everybody,

Got a rally-raid rig with GM LS2 from TurnKeyEngineSupplies installed. Bob Radke (mefiburn.com), who tuned the engine, said it's good if the engine's not hotter than 95C/203F, worse if it is. The problem is during the race I usually have it running around 105C/221F and it can last for hours.

As I read here and somewhere else there's a lot of people who run their LS's at such temperatures. Is Bob overcautious or shall we all end up with broken engines? Please help. Thanks!

ALFA test 240312 - YouTube
 

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I cannot tell for Aluminum block, but my iron block 6.0 (LY6) loves to run at 210 all time.
Never had a problem with that temp.
 

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my gmpp ls2 runs no hotter than 210 during races as long as the fans are spinning, the wife forgot to turn them on once when she took it out alone and it got over 240, no issues.

my previous rigs have all run around 205-210 on other engines as well.
 
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