True but my c5 fan turned on at 232 degrees. Don't need much snort on your fan to maintain that temp. Carbs hate heat and it's not that optimal. 600 hp car still makes more heat at idle than 350. It's all relative. I have a dual fan with full shroud and I can't get any heat in mine when it's 70 crusing. 180 stat and it runs 150-165 on the highway. Summer it runs 180-190 with full shroud at speed. Keep in mind the factory is going to use what it can get by with. For us hot rod builders we want our temps in a specific range and it's usually around town idling that causes issues. On the track then no shroud is probably ok.
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