(sorta) dumb question...

[DoogieLee]

Why does my stock thermostat run right on 190 degrees, pretty much no matter what? yet, when I installed a Lingenfelter 180 it varies anywhere from 188-199...usually stays at 197.
I am reading these numbers from my ScanGauge.

My truck is an 07 Classic CC 4WD
4.8
K&N intake
Magnaflow muffler turned down before the axle
Street Tuned by BlackBear

Thanks in advance,
-Doogie=

[SLO TRUCK]

I think the stocker is like 210*

Why does my stock thermostat run right on 190 degrees, pretty much no matter what? yet, when I installed a Lingenfelter 180 it varies anywhere from 188-199...usually stays at 197.
I am reading these numbers from my ScanGauge.

My truck is an 07 Classic CC 4WD
4.8
K&N intake
Magnaflow muffler turned down before the axle
Street Tuned by BlackBear

Thanks in advance,
-Doogie=

[jetmech]

That 180 will start to open at 180* but will not maintain a consistent 180 temp. If you want a lower running engine temp, put a 160 in. Personally I would stick with a stock thermostat. The way I see it, our engines are designed to run at the temperature that the stock thermostat allows. I would think you would get excessive blow-by with a lower operating engine temp

[jetmech]

I think the stocker is like 210*

stock operating temp is 190* so the stock thermostat will be a tad lower

[DoogieLee]

Thanks guys, appreciate the help.

I'll throw the stocker back in when I get back home from Thanksgiving.

Probably no real reason to run a non stock thermostat on a (very) mild N/A motor...

Thanks again

[George C]

That 180 will start to open at 180* but will not maintain a consistent 180 temp. If you want a lower running engine temp, put a 160 in. Personally I would stick with a stock thermostat. The way I see it, our engines are designed to run at the temperature that the stock thermostat allows. I would think you would get excessive blow-by with a lower operating engine temp

to cold isnt going to hurt blow by. I run no stat and just use restrictor, crusing my temps are 150*, highest ive seen with this setup is 185* and that was in stop and go traffic with AC on. My motor has no blow by. granted this ist for everyone


if yorue going off the gauge then youll be led falsely. to monitor proper temp you would need either aftermarket gauge or a scanner

the gauge reads head temp

[randomhero]

stock operating temp is 190* so the stock thermostat will be a tad lower

LOL, I don't know how many silverados you've driven, but stock operating temperature is not 190*. Even in 40 degree weather the operating temperature should be around 195-200*.

People claim that a 160* thermostat will cause problems, but I have yet to see any actual evidence. The pcm will stop adding fuel to maintain a rich condition around ~140* so that wouldn't even be a factor, and the engine should run around 170-180* with a 160* thermostat.

[truckinL33]

besides the fact that any (late model) engine will get better mileage at 200 as opposed to 160 AND make more power.

[cjriojas]

If the number one killer of engines is heat, how is this statement true? Is there something i havent heard about?

[Sleaper]

besides the fact that any (late model) engine will get better mileage at 200 as opposed to 160 AND make more power.

A hotter engine makes more power?? That's the first time I've heard that one....