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Hotter or Colder T-Stat ??

This is a discussion on Hotter or Colder T-Stat ?? within the Internal Engine forums, part of the LSx Technical Help Section category; The car I just got has a 160 degree Thermostat... and the fans are set to come on at 170 ...

  1. #1
    LS1 or bust b.lee's Avatar
    Join Date
    Aug 2006
    SE, Michigan

    00 Z28 6Spd / 03 Z71 LT

    Hotter or Colder T-Stat ??

    The car I just got has a 160 degree Thermostat...
    and the fans are set to come on at 170 or 175...

    The never reaches The Halfway Mark (185) between 160 and 210
    It gets halfway between 160 and 185.

    Is this bad?
    Use more gas?
    Faster? Slower?

    Thanks Guys.
    00 Z28 M6 T-tops
    00 SS A4 T-tops (Sold)
    99 Corvette M6 (Sold)
    98 Z28 A4 Coupe (Sold)
    98 Z28 A4 T-tops (Sold)

  2. #2
    Member cailey37's Avatar
    Join Date
    Mar 2006

    1998 Pontiac Trans Am

    Well it would depend on how the car was tuned, if at all. When you put a 160 degree thermostat in the computer thinks the car is colder than it is and keeps putting the fuel to it trying to get it at the operating temp. There will be guys that debate this to death but the advantages of a cooler running car are having the ability to add some fuel, timing to the mix and make more power..... With heat you get the possibility of detonation in the motor.....a 160 just opens up sooner and keeps the car cooler......if you go in a program the car to respond to this then yes you could get a little more power out of the motor......

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