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Trying To Find A 180 Thermostat - 2007 V-max 6.0

wzschirnt

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wzschirnt Enthusiast

wzschirnt

Posted
Posted

Hi,

 

2007 1500 LT VortecMax 6.0l.

 

I got a Black Bear tune (93 octane) a few weeks ago on my truck at the 'tune event' in Ft Worth. Love it - no AFM, better shifts, better towing characteristics, less down-shifting when towing, well worth the money.

At the time, Justin set the fans to come at a lower temp since I said that I was planning to put in a 180 thermostat instead of the 195 (?) stock one. The truck has run at 210 indicated (201 according to Justin's computer) since new - empty, towing 6500lbs (which I do a lot), a/c on/off, whatever. No problems at all; just want to see a little lower temp to help when under a load.

 

The problem is that I can't find a 180 degree thermostat. Hypertech says they do't even make one (their tech support said that the 180 was the stock temp thermostat! Not sure about I agree with that.). SLP only makes a 160 (too cold for the open-loop/closed-loop deal) and Summit and Jegs seem to be confused as to whether they have one or not.

 

So, does anyone know if a 180 thermostat is made for the 6.0 and, if so, who makes it?

 

Thanks,

walt z.

TSpeedy Enthusiast

TSpeedy

Posted
Posted

I did this mod on my 04 GTO. For me, the 195* thermostat( stock) landed me in the 212*+ range. With the 160* thermostat. im in the 180*'s.

 

 

 

Hope this helps.

 

 

 

I love my BB Tune also!

markw8 Enthusiast

markw8

Posted
Posted

The only thing a lower temp stat does is lower the opening point. The truck will run at the temp it wants. If you've fattened up the mixture it might run a cooler. The fans in my Vette come on at 226. It's never been a problem. I know some of it is for emissions but if you run it hard it will heat up.

 

Mark

wzschirnt Enthusiast

wzschirnt

Posted
  • Author
Posted

The truck has enough cooling capacity (as evidenced by the fact that it runs with the current temp nailed on 210 indicated in whatever conditions it is subjected to) to handle a lower temp Thermostat and run at that lower temp. My fans have already been set to a lower "on" temp, but are just 'spinning it's wheels' (blades?) with the stock thermostat.

 

Anybody find/put in a 180 thermostat in this type of engine?

 

Thanks.

walt

Doug_Scott Senior Enthusiast

Doug_Scott

Posted
Posted
The truck has enough cooling capacity (as evidenced by the fact that it runs with the current temp nailed on 210 indicated in whatever conditions it is subjected to) to handle a lower temp Thermostat and run at that lower temp. My fans have already been set to a lower "on" temp, but are just 'spinning it's wheels' (blades?) with the stock thermostat.

 

Anybody find/put in a 180 thermostat in this type of engine?

 

Thanks.

walt

 

The fans are only of use when truck is stopped, or driving very slow, or one I think comes on with the a/c regardless of engine temps. No fans at highway speeds, Although logic tells me that they come on to not disrupt or block air flow on the highway. I was never a fan (no pun intended) of using lower than designed thermostats on odbii controls.

06MonteSS Enthusiast

06MonteSS

Posted
Posted
Hi,

 

2007 1500 LT VortecMax 6.0l.

 

I got a Black Bear tune (93 octane) a few weeks ago on my truck at the 'tune event' in Ft Worth. Love it - no AFM, better shifts, better towing characteristics, less down-shifting when towing, well worth the money.

At the time, Justin set the fans to come at a lower temp since I said that I was planning to put in a 180 thermostat instead of the 195 (?) stock one. The truck has run at 210 indicated (201 according to Justin's computer) since new - empty, towing 6500lbs (which I do a lot), a/c on/off, whatever. No problems at all; just want to see a little lower temp to help when under a load.

 

The problem is that I can't find a 180 degree thermostat. Hypertech says they do't even make one (their tech support said that the 180 was the stock temp thermostat! Not sure about I agree with that.). SLP only makes a 160 (too cold for the open-loop/closed-loop deal) and Summit and Jegs seem to be confused as to whether they have one or not.

 

So, does anyone know if a 180 thermostat is made for the 6.0 and, if so, who makes it?

 

Thanks,

walt z.

 

the stock t-stat is 187*...

  • 4 weeks later...
wzschirnt Enthusiast

wzschirnt

Posted
  • Author
Posted

Its been a while since I commented on my thermostat issue. So...

 

First, to 06MonteSS, you are correct. 187 (86c) is the stock thermostat in my 6.0. I pulled it out and it is the stock one and stamped "86c", so "Huzzah" to you. Thus my inability to find many 180 thermostats. I finally broke down and put in a 160 degree thermostat (Mr Gasket 6367 - 11.95 at Summit with my discount).

 

Installation was fairly painless, though messy because of no drain cock on the radiator. I pulled the lower radiator hose, but at the thermostat housing end with the lower hose pinched off with a pair of long-nosed vise grips. Only leaked out about 1/2 gallon instead of 3 gallons! Pull out the old one and put in the new one. Get rid of the spring hose clamp (what an absolute PIA that is!!)and replace with screw-type clamp.

 

Temp now runs from 180 to 210 (indicated) depending if the fans are on or not. It actually runs cooler when the a/c is on since the fans are on. Running down the highway with no a/c and 105 degrees outside temp, temp is around 190 steady. Around town, same outside temp, runs up to 210 indicated (like before BB tune and with old thermostat) and stays until the fans come on and then it cools down. With a/c on, on highway and around town, temp is about 185. I need to talk to BB since the "On" temp was supposed to be lowered to about 190, but that is a minor deal. I think that the temps look high enough to make the "closed-loop/open-loop" deal a non-issue.

 

I have a 60 mile tow this weekend (race car and trailer), so we'll see how it acts, but I forsee no problems. I'll let y'all know.

 

Thanks for all of your help and comments.

walt

  • 2 months later...

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