have been looking at a 180 thermostat that everyone on here seems to love but one simple ?

i have seen a 165 thermostat that would seem to offer better performance but is this a smarter move since it would "technically" keep the engine cooler then the 180 ?

 

It would technically keep the engine cooler but there is a point of diminishing returns, you will get Check Engine Lights (CELs) when you go too low. Go with a 180 and you will be happy any cooler and you might have issues.

 

Your engine needs to retain some heat to remain at an optimum operating temperature. The we used to call the 165's tropic thermostats. I tried one when I lived in Hawaii and ended up going back to a 180 when I got my radiator recored . I have noticed my 06 has a sweet spot around 195 degrees. A 180 (or maybe 190?) with the correct fan setting should be sufficient. A 165 might make it run too cold on the open road.

Redbeard

 

For me the 180 worked great, no error codes. Since I have not modified my fan control, it only makes a difference on the highway. In stop and go traffic it stays just where DCX programmed it.

Be careful selecting the correct thormstat. The first one I installed was a fraction to deep, and it was mechanically kept from opening because of clearance, causing my engine to overheat. The installation is a snap, if you can locate the video someone made and posted on here.

Enjoy!

 

i appreciate all the feedback

can you guys suggest the right one to get ? i have the 5.7L with a K&N CAI and flowmaster exhaust. i have 3 different parts stores within 3 miles of me ( PEP BOYS, AUTOZONE & ADVANCED AUTO)

Predator should be here tomorrow - UPS wont deliver without a signature and was away friday & saturday - DAMN

 

Engine temps will rise to stock tempature unlessyou have a fan mod or a tuner that allows you to override the stock settings.

Here are a couple 180 t-stats that you should be able to find:
PepBoys - Stant 14248
NAPPA - 191 THM

<edit> I saw a post that said that Autozone has a valuecraft 180 t-stst part number 4128

The key is their 2.5 inch wide (63.5mm).

 

which 180 degree thermostat is everyone running right now or pleased with? i bought the coolit mod from noesp and have it sitting here on my desk. have never installed it. I installed the noesp mod and forgot about the coolit mod... need to know what thermostat everyone is pleased with.

 

Two of the more common ones are in the post above yours, I run the NAPA.

 

thanks mango haven't been around in a bit.. i appreciate the info. catch you guys later..