160* stat.
Melting Slicks
Joined: Apr 2007
Posts: 3,290
Likes: 0
From: Willow Springs IL
There is NO REASON to use a 160' stat in an otherwise stock car. All the thermostat will do is allow the coolant from the radiator to flow through the engine sooner (160' verses 195'). Once the thermostat is opened up and everything is warmed up it will still reach the same temperature as if it had the stock thermostat in it. In order to see any benefit from a cooler thermostat you will need to re program the fans to turn on earlier. This could possibly help maintain a cooler running system. FWIW I have the stock thermostat in my A&A blown LS2 with a DeWitts radiator and wouldn't change it. With a good radiator, the fans hardly ever come on (unless I am sitting in traffic for extended times) and I still maintain the factory intended operating temperatures. Do a search on this topic. You will find many people that agree with me, and disagree with me.
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
There is NO REASON to use a 160' stat in an otherwise stock car. All the thermostat will do is allow the coolant from the radiator to flow through the engine sooner (160' verses 195'). Once the thermostat is opened up and everything is warmed up it will still reach the same temperature as if it had the stock thermostat in it. In order to see any benefit from a cooler thermostat you will need to re program the fans to turn on earlier. This could possibly help maintain a cooler running system. FWIW I have the stock thermostat in my A&A blown LS2 with a DeWitts radiator and wouldn't change it. With a good radiator, the fans hardly ever come on (unless I am sitting in traffic for extended times) and I still maintain the factory intended operating temperatures. Do a search on this topic. You will find many people that agree with me, and disagree with me.
One of the many who will!! 
Team Owner
Joined: Apr 2008
Posts: 51,040
Likes: 1,160
From: S/W ,Fla-Ohio State Football isn't a matter of life or death,Its Much More serious than that
There is NO REASON to use a 160' stat in an otherwise stock car. All the thermostat will do is allow the coolant from the radiator to flow through the engine sooner (160' verses 195'). Once the thermostat is opened up and everything is warmed up it will still reach the same temperature as if it had the stock thermostat in it. In order to see any benefit from a cooler thermostat you will need to re program the fans to turn on earlier. This could possibly help maintain a cooler running system. FWIW I have the stock thermostat in my A&A blown LS2 with a DeWitts radiator and wouldn't change it. With a good radiator, the fans hardly ever come on (unless I am sitting in traffic for extended times) and I still maintain the factory intended operating temperatures. Do a search on this topic. You will find many people that agree with me, and disagree with me.
Drifting
Joined: Oct 2010
Posts: 1,513
Likes: 86
From: Rocheport Missouri
There is NO REASON to use a 160' stat in an otherwise stock car. All the thermostat will do is allow the coolant from the radiator to flow through the engine sooner (160' verses 195'). Once the thermostat is opened up and everything is warmed up it will still reach the same temperature as if it had the stock thermostat in it. In order to see any benefit from a cooler thermostat you will need to re program the fans to turn on earlier. This could possibly help maintain a cooler running system. FWIW I have the stock thermostat in my A&A blown LS2 with a DeWitts radiator and wouldn't change it. With a good radiator, the fans hardly ever come on (unless I am sitting in traffic for extended times) and I still maintain the factory intended operating temperatures. Do a search on this topic. You will find many people that agree with me, and disagree with me.
Why would you want to lower the operating temperature from the stock setting? I can't think of one good reason and I grew up in Florida where the summer heat was relentless. As long as the engine oil is up to the task and the car doesn't over heat, which would point to a failure of a component, the factory setting is where the engine runs the best and is most efficent.
Safety Car
Joined: May 1999
Posts: 4,693
Likes: 10
From: Carefree, Arizona
2017 C7 of Year Finalist
There is NO REASON to use a 160' stat in an otherwise stock car. All the thermostat will do is allow the coolant from the radiator to flow through the engine sooner (160' verses 195'). Once the thermostat is opened up and everything is warmed up it will still reach the same temperature as if it had the stock thermostat in it. In order to see any benefit from a cooler thermostat you will need to re program the fans to turn on earlier. This could possibly help maintain a cooler running system. FWIW I have the stock thermostat in my A&A blown LS2 with a DeWitts radiator and wouldn't change it. With a good radiator, the fans hardly ever come on (unless I am sitting in traffic for extended times) and I still maintain the factory intended operating temperatures. Do a search on this topic. You will find many people that agree with me, and disagree with me.
You also run the risk of the oil not reaching the optimum operating temperature. Change the fan temperature if you must, but not the thermostat.
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Le Mans Master
Joined: Jun 2007
Posts: 7,610
Likes: 12
When I had a 160° stat w/ tune it took too long for the engine to warm up. Every day I sat there for 20 minutes
Switched to a 180° w/ re-tune and now it warms up quicker as well as keeps the temps mild.
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
Team Owner
Joined: Dec 2003
Posts: 57,408
Likes: 164
From: queensbury ny
Originally Posted by lastcowboy View Post
does this void the warranty ? can you use this this without a tune ?
does this void the warranty ? can you use this this without a tune ?
Goon Squad King of Battle
Joined: May 2008
Posts: 118,306
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From: 🐑🐑🐑🐑🐑🐑🐑🐑🐑🐑🐑
St. Jude Donor '08 thru '23
Team Owner
Joined: Mar 2001
Posts: 25,013
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From: Manitoba/San Jose del Cabo
Cruise-In III Veteran
St. Jude Donor '11
Safety Car
Joined: Jan 2009
Posts: 4,681
Likes: 2
From: Mooresville (Race City USA) NC
There is NO REASON to use a 160' stat in an otherwise stock car. All the thermostat will do is allow the coolant from the radiator to flow through the engine sooner (160' verses 195'). Once the thermostat is opened up and everything is warmed up it will still reach the same temperature as if it had the stock thermostat in it. In order to see any benefit from a cooler thermostat you will need to re program the fans to turn on earlier. This could possibly help maintain a cooler running system. FWIW I have the stock thermostat in my A&A blown LS2 with a DeWitts radiator and wouldn't change it. With a good radiator, the fans hardly ever come on (unless I am sitting in traffic for extended times) and I still maintain the factory intended operating temperatures. Do a search on this topic. You will find many people that agree with me, and disagree with me.
Advanced
Joined: Sep 2010
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From: El Segundo California
Le Mans Master
Joined: Oct 2001
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From: Pine Bluff Arkansas
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21