LS2: Does 160/180 stat change need fan changes?
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Joined: Sep 2010
Posts: 77
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From: Chandler AZ
LS2: Does 160/180 stat change need fan changes?
I have a stock LS2 Z51. I have read about 50 threads on changing out the thermostat in an LS2...all with pros, cons, arguments for and against.
Here's my plan before my next NASA HPDE track days:
- Swap to a 160 thermostat
- Partially drain and fill coolant mixture with Demin water until relatively diluted and then add Water Wetter (I don't want to argue the merits of WW, our NASA region requires it for TT and Race Group).
Here's my question. After installing the 160 stat, will I need to have some sort of tuning/programming done to alter the fan run temps? My old LT1 Z28 had an option on it's Hypertech Power Programmer that would change the fan operating ranges depending on the stat. Didn't know if there is a similar MUST for the LS2...nobody ever mentions it. If so, how do I go about doing that?
Here's my plan before my next NASA HPDE track days:
- Swap to a 160 thermostat
- Partially drain and fill coolant mixture with Demin water until relatively diluted and then add Water Wetter (I don't want to argue the merits of WW, our NASA region requires it for TT and Race Group).
Here's my question. After installing the 160 stat, will I need to have some sort of tuning/programming done to alter the fan run temps? My old LT1 Z28 had an option on it's Hypertech Power Programmer that would change the fan operating ranges depending on the stat. Didn't know if there is a similar MUST for the LS2...nobody ever mentions it. If so, how do I go about doing that?
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
It's not a must on the LS2 just like it wasn't a must on the LT1, but you'd be missing most of the point of getting the lower thermostat if you didn't have the car re-tuned.
Any handheld programmer or tuning software should be able to do it.
Any handheld programmer or tuning software should be able to do it.
SUBVETTE
Joined: Jul 2006
Posts: 3,841
Likes: 93
From: San Diego CA
Mine was reset to come on at 196 by my tuner during tuning. I am running a 180 thermostat.
Drifting
Joined: Apr 2006
Posts: 1,276
Likes: 5
From: Ambler Pa.
I have a stock LS2 Z51. I have read about 50 threads on changing out the thermostat in an LS2...all with pros, cons, arguments for and against.
Here's my plan before my next NASA HPDE track days:
- Swap to a 160 thermostat
- Partially drain and fill coolant mixture with Demin water until relatively diluted and then add Water Wetter (I don't want to argue the merits of WW, our NASA region requires it for TT and Race Group).
Here's my question. After installing the 160 stat, will I need to have some sort of tuning/programming done to alter the fan run temps? My old LT1 Z28 had an option on it's Hypertech Power Programmer that would change the fan operating ranges depending on the stat. Didn't know if there is a similar MUST for the LS2...nobody ever mentions it. If so, how do I go about doing that?
Here's my plan before my next NASA HPDE track days:
- Swap to a 160 thermostat
- Partially drain and fill coolant mixture with Demin water until relatively diluted and then add Water Wetter (I don't want to argue the merits of WW, our NASA region requires it for TT and Race Group).
Here's my question. After installing the 160 stat, will I need to have some sort of tuning/programming done to alter the fan run temps? My old LT1 Z28 had an option on it's Hypertech Power Programmer that would change the fan operating ranges depending on the stat. Didn't know if there is a similar MUST for the LS2...nobody ever mentions it. If so, how do I go about doing that?
