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SAAC Forum => SAAC Forum Discussion Area => Topic started by: TS69GT500 on July 27, 2025, 04:35:57 PM

Title: Best temp Thermostat for GT500's
Post by: TS69GT500 on July 27, 2025, 04:35:57 PM
69 GT500, runs excellent and all OK with the cooling system (Modine #379 radiator, new fan clutch etc.).
Factory spec for 69 is 192 deg thermostat I think.
Can't locate a 190 deg stat so have been running a 195deg.
I installed a SW mechanical temp gauge and can see exactly when the thermostat opens and keep an eye on the temp.
All seems OK as temp never exceeds 200.
Just wondering what other big block owners are running esp. in climates with hot summers and cold winters.

Thanks,
TonyS
Title: Re: Best temp Thermostat for GT500's
Post by: jimhyc on August 05, 2025, 06:48:55 PM
Run a 160 in mine and have no issues. 
Title: Re: Best temp Thermostat for GT500's
Post by: FL SAAC on August 05, 2025, 08:15:46 PM
we are located in lovely  Floridaland and we run a brass 160 degree thermostat
Title: Re: Best temp Thermostat for GT500's
Post by: TA Coupe on August 05, 2025, 09:33:14 PM
We run a 100° thermostat around here because we need to get ahead of the temperature because of the extreme heat😓😓

     Roy
Title: Re: Best temp Thermostat for GT500's
Post by: FL SAAC on August 05, 2025, 10:01:52 PM
Quote from: TA Coupe on August 05, 2025, 09:33:14 PMWe run a 100° thermostat around here because we need to get ahead of the temperature because of the extreme heat😓😓

     Roy


100 dugreeze


Now that's really kool !
Title: Re: Best temp Thermostat for GT500's
Post by: Bob Gaines on August 05, 2025, 10:13:01 PM
160 degree but not just any . Best to use one of the free flowing or high performance type . They go by many names but they all have the similar look design. I use Mr Gasket because it is the least expensive and carried by the local auto parts store. 
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