TDUB
Dedicated LVC Member
I know it doesn't really do a whole lot but it can't hurt so I'm wondering if anyone has upgraded their thermostat to a low temp one on the LS, and if so what did you use?
Leave the t-stat alone. They have been engineered to be perfect. They are high temp for a reason. Too low opening temp and the water doesnt sit in the radiator long enough to cool. If you remove it and run without one, it will overheat because the water doesnt stay in the radiator long enough to cool. Same goes if you drill it out, even alittle. Best way to gain HP in a factory engine is to cool down the air and fuel. Anything else will be negated by the computer changing the timing to compensate. Air restriction is not an issue. You need the coldest, driest, crisp air you can get. If it's 90 degrees with 70percent humidity, that's it. You can not get colder air then the ambient. Install cool can for fuel line, fill with ice and enjoy. Until it melts, just like a fresh beer from the freezer. But please, dont jack with the T-stat.
Best bet if replacing the T-stat is using a fail-safe T-stat; these, when they fail lock open instead of closed; ensuring your engine doesn't overheat.