If the engine is too cool it will wear more and the parts won't be sealing as well as they would at the designed operating temp. Lots of tolerances get messed up when you run too cool. I like 180-195, anything cooler has never been proven to make a car faster. Yes having a cooler engine will make more horsepower so LONG AS the intake hasn't already heat soaked. Once that happens you're almost better off with a 180 stat since the rings, bearings, head gasket and what not will all be "tighter." Piston rings wear when the piston is loose in the hole, cold block = extra wear.
It's all up to you and I'm just giving you my opinion for whatever it's worth.
Also, definatly change those fan temps to match the stat. You could damage the 160 stat by overheating it up to normal temps on a regular basis. They're wax, wax expands, overheat it too much and the wax leaks out the seals
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__________________
, Jon
Owner of a Red Sled.
If it\'s EFI I can tune it. Specialize in 82-95 GM (yes Lt1\'s)
\"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......Then, you have enough horsepower\" - Mark Donohue
