what thermostat for my 05 4.8 5 speed? any hp gain, and when do stock fans come on?
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PT's Slowest Truck
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There was a lot of discussion about this a while back, and it's my "new" opinion that unless you're boosted, the lower t-stat won't do a hell of a lot for you. You might be able to squeak a little more timing out of it, but I doubt that you'd notice a difference. I'm running a 160* stat and I've been happy with it, but whenever I get around to building my LQ9 I'll probably go up to a 180* stat. The factory stat is 195* I believe. Not sure about the factory fan settings, but I know that it's over 200* when they come on.
From what I remember reading, the LS engines seem to perform the best and most efficiently between 180-200*
From what I remember reading, the LS engines seem to perform the best and most efficiently between 180-200*
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