I just got done putting my thermostat in and that was eaaasssy. Once agian i had my doubts about how easy it really was going to be but everything went smooth. After i blead the system, i went around to test it and it didn't go over 190! I was doing alot of stop and go to see how far the temp would go and that'* it! Most of the time it hovered between 170 to 180.

If anyone wants help doing this just ask. It'* still all fresh in my head.

I'm happy with mine too, but I do notice that when the weather warmed up, and I was sitting idling long enough, the temp would climb back up about 200 like the gurus said it would.

Just did mine tonite too! Along with the water pump:P

what exactly does the 180 thermostat do performance wise???

Not much, but it keeps the engine cooler. And as Jr has mentioned a few times, the biggest killer of the transmissions from 87-91 is the heat.

I have mine, but not installed yet. Once I go for my spring tune up and tire rotation, I'll have it installed.

Easy to do tho, if you want to install it yourself and its very inexpensive

How do you bleed the coolant system for air?

On your water oulet (above t-stat) there should be a screw...run engine until at operating temp...loosen screw til there is a steady stream of coolant...then tighten..ALL DONE

could you try loosening the cap on the radiator? I thought there was a bleed valve on top of the radiator too, but I have never checked. Another way to make sure it doesnt bleed is to drain a qaurt or two out of your system into a clean container before you install the t-stat, and then dump it back in when you are done. Wouldnt this work???