1972chevelle454

iTrader: (2)

I am going to get a 160 Thermostat so i can get my fans turned down lower. Is 160 too cold or will the ls1 be fine running around that temp. want to be sure before i get one.

santino04

Many different response on this issue. Alot like the 160 and say the 180/185 (forget what it is) is too warm and others like the 185 and say the 160 is too cold. Most guys I see are running the 160. It doesnt mean that your car will be running 160 temperatures but that the stat will open at 160.

I have 160 and i would say Im running anywhere from 180 to 200 off the stock gauge which is kinda inaccurate. If you look at most performance books the suggest 160 and most have the modify your own to a 168, not sure on how to do that. You can do a search youll find a bunch of answers. Good Luck

AnthonyR

iTrader: (3)

I run a 160 stat, my normal operating temps are 185-189(auto tap readings)...pretty much have to run that size stat here in Fl, especially in the summer time.

NHRATA01

iTrader: (10)

I run a 160, and going off my autometer gauge which has a sender in the head, it runs about 180-185ish in fair weather, and about 185-190 in the summer. On the highway even in the summer it will sit right around 180. I do have the FTRA, so that probably blocks some flow.

The negative is I've taken the car out a few times in recent weeks, where we've had sort of a thaw here in NY, temps in the low-mid 40s, and at highway speeds the car will only run at ~165, which IMHO is a bit low.

white2001s10

iTrader: (4)

160* is fine for summer, but will be too cold in the winter for some people.
You'll need to go into the ECT fueling correction table and the matching timing table and take some or all of the corrections out for your new "normal" operating temp. It will save you on fuel, and be better for the engine.

Theoretically you shouldn't have to do this as the PCM corrects in closed loop, but the reality is that it helps a lot.

JBIRD02

iTrader: (4)

I was curious about the 160* also.
I think MTI has a 178* t-stat, would that be a better compromise, or just a waste of time?

Another_User

You will never actually run at 160 degrees when warm. I think normal operating temperature when it is about freezing outside at cruise is usually about 169 degrees. During the summer I expect it will actually be about 180 degrees. 169 might be a bit cold, but not that bad.

Ryan02SS

iTrader: (3)

I run the 160 during summer but swap back in the stock one during winter. The 160 stat is too cold if the temps are regularly below 50 degrees.

JimMueller

iTrader: (9)

Can someone elaborate on what specifically needs to be changed in the tables? I've got HPT & a 160 if it matters.

Homeslice (tm)

I have run the no thermostat option for two years now with no problems... I'm lucky if I see 160 when I'm moving.

white2001s10

iTrader: (4)

Well what I do is look in the columns of data under the normal operating temp and just duplicate them in the columns between there and your new operating temp.
For instance if the fueling correction at 200*F on the table is 1.0
then I put 1.0 in the columns between teh 160* column and the 200* column.
That will eliminate the correction.

If you run much below 160*F, then you may still need some correction, but probably not even half of what is programmed in by the factory.

BriancWS6

iTrader: (18)

I had a 160 in my pewter car. In the summer it ran about 182 according to a Tech II. I don't know what it ran in the colder weather though, always seemed fine to me. I'll get a 160 again when the mods start.

SStheBest

iTrader: (2)

im going to miami fl this summer and im still on the stock thermostat....wandering if my car will be alright....BUT i do have a manual switch for my fans...im sure that will help