can some one please tell me how to cool down my ls1, do you have to chang the stat or can I change the fans to come on at a lower temp in HPtuner. Its not running hot but I would like to have it lower to work with my temp gauge better. It runs at 210 i would like at 190 or 180

 

GM designes and engineers the engines to run hot for emissions reason. you can use HPtuner to lower the fan setting, but should also change the T-Stat to match.. else if you don't change the T-stat, the fans would come on, but the t-stat is still going to try and bring the engine up to it operating range (it might help some, but it would be fighting the T-Stat that is still closed).

If you change the T-Stat and not reset the Fan setting, then the Fan's would not come on until it reachs the factory setting (223* ?). again, would only help some, sometimes.

Bottom line, change the T-Stat and retune the fans..

 

yea i kinda thought that too, just hoping for fan change, thanks how about putting a resistor to make the gauge read a little lower. it max at 220

 

If you have an 01+ LS1 thefactory t-stat is 186*, so you would just need to reprogram the fans, 98-00 LS1 have 195* stat and would need a new low temp one to get the temps down (plus reprogram the fans)...good luck

 

If you want the motor to actually run cooler, take the t'stat apart and put shims under the valve. I put an 0.080 shim in mine and it runs ~185°...

 

thanks for the stat info,my ls1 is 99 so that would be 195. I will put a 180 in and reset the fans in HPtuner. should help the gauge and help on those hot days here in new orleans. here some pictures of where all the info gose.

 

Now that's cool.

 

Two Words; Ron Davis

I have arguably the smallest engine compartment, and live in Arizona 115 degree days in Summer and the Davis cross-flow radiator they built for me keeps my LS2 under 190 all the time and even in Summer, bumper to bumper traffic the fans rarely come on.

Priceless.

 

I think the rad big enought two rows 1" tubes, It don't run hot.I was tring to make the gauge read better. at 212deg. It right next to 240 on the gauge. I know I sould have got a better gauge. in this it about the looks. but thanks for the rad info. ps I pade 100 bucks at speedway for this one.