Murray 4089 Thermostat?

[mespock]

I always order mine from Max and get the ones for the Lightning ...

 

[cougarmandan]

Well, got the new Stant T-stat in and looks like were in business. I guess there is something to the Murry not working. It's running hotter than it used to, but it cools down when you go down the road, so that is a major improvement. It seems to hold at half way when its idling and at 1/3 when driving. Its kind of hard to tell what normal is supposed to be because my old one was stuck open until recently where it started going back and forth. It rarely got past a quarter. If I ever put another in, I'll get a Motorcraft and probably drop it a few degrees, although, 160 seems a little too low. I had a 72 Ranchero 351c and I put a 160 in because I read in a book it was the thing to do horsepowerwise. But after years of not ever getting warm enough to heat the car, my brother finally changed it and it gets warm now in the winter and it actually drives better when its cold out. Quite refreshing. Anyways, what temp does the lightning open.