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160 thermostat LS1

This is a discussion on 160 thermostat LS1 within the General Help forums, part of the LSx Technical Help Section category; Can anyone recommend a 160 degree thermostat for a 99 LS1. Is it a good idea to run this cool?...

  1. #1
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    pewter
    1999 Camaro SS

    160 thermostat LS1

    Can anyone recommend a 160 degree thermostat for a 99 LS1. Is it a good idea to run this cool?

  2. #2
    Army of 1 wooddaniel's Avatar
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    Ignition Orange/Black
    2008 G8 GT, 98 Z28 383

    Mine works good. my motor stays right around 175

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    Member mvvette97's Avatar
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    1997 corvette 00 WS6 TA

    It won't run 160. Mine runs in the 175 to 180 range also with the 160 stat.

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    Member Mike's TA's Avatar
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    99 Trans Am(sold)

    I have one a buddy gave me from his truck. He tried it and started getting codes, don't know which ones. He gave it to me saying I will need to get a tune when I install it.

    Is that true?

    I know I would benefit with a tune, but is it necessary to get the tune after installing the thermostat?

  5. #5
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    PEWTER
    2001 TRANS AM WS6

    YES so your fans work right

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    MOTOR CITY MARO' SSTODD's Avatar
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    2000 CAMARO SS #3821

    I have not tuned and it is fine, if you idle for a while the temp climbs up just like the stock temp. until the fans come on. programming just has the fans come on before factory settings to keep it cooler. Normal use and driving is right around 177 for any brand 160.

  7. #7
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    2000 Camaro

    Quote Originally Posted by Rich Gershman View Post
    Can anyone recommend a 160 degree thermostat for a 99 LS1. Is it a good idea to run this cool?
    You might want to try a bigger raditor like a 4 or 5 row hi eff. a 4 row helped mine run at 165 the only time it went above that is when i was pulling a big hill or the outside temp. was over 100 deg

  8. #8
    Army of 1 wooddaniel's Avatar
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    Quote Originally Posted by richardmurdock View Post
    You might want to try a bigger raditor like a 4 or 5 row hi eff. a 4 row helped mine run at 165 the only time it went above that is when i was pulling a big hill or the outside temp. was over 100 deg
    He could, but I have the stock radiator and a 160 stat and I never go over 175 even on hot days. I live in florida too so it gets HOT out. 175 is very good compared to stock

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