The Stovebolt Site Forums The Shop Area Engine Shop Recomended thermostat

Well, I finally have my new engine in and running! Unfortunately, it's running a little bit hotter than I like. It's a '68 250 rebuilt for unleaded. It warms up quick, and sits about 2/3 of the way up the temp scale. My current thermostat is a 180, with a single core radiator (new). What temp thermostat do you gurus recommend? I'm thinking 165, but waiting on the more experienced heads to confirm or deny.

Do you think it's running too hot? You didn't mention a specific overheating problem, and you aren't likely to get 100+ degree days in Puyallup, so it's probably OK as is.

The engine will run more efficiently at warmer temperatures. As long as it doesn't boil over or approach 212 on long hauls or steep climbs, it's probably OK.

I picked the 180degree for my 250, but that's with a 3-row core. It does get over 100 regularly here in the summer...

-Boyo

I checked the (Napa) stores as well. They say a 180-195 is best. They has an interesting idea as well, buy a "real" temp guage and hook it up to see whats the actual temp. It's not boiling over, so I think I may have a bad sensor, or hook up into it. Not to meantion, new engine, everything tight = higher temps.