Re: 401 operating temperature

[farna@xxxxxxx]

Try a 190 or 195 degree thermostat. It won't make the engine run any hotter as in reducing overheating, it just lets the engine get up to operating temp faster. As Tom J suggested, check the timing. 

I found oout the hard way that to much antifreeze is a bad thing! I had about 60% AF and 40% water in my stroked six (4.0L, now 4.6L). It would run hotter than it should on warm days, and boiled over a couple times before I figured out the cause. 50-50 is max recommended unless in really cold climates -- I was on the Mississippi gulf coast -- really hot and humid in July and August! Drained and started over from scratch -- no more overheating even on 90+ degree, 85%+ humidity days. 

I heard on the news report here in Dover (Delaware) that there was going to be "oppressive humidity of 72% along with mid 80 degree temperatures" and couldn't help but laugh! That's a typical late spring/early summer day in MS, might even be a bit low in humidity!! 


On July 15, 2005 Bill Dettman wrote:

Thanks for the info!
Well, I am running a M&M Supercooler trans cooler mounted ahead of the A/C condenser. There is an air gap of about 2 inches between the cooler and the condenser. I do suspect I may have a bit too much antifreeze concentration. I am thinking about draining about a half-gallon, replace the 160 thermostat with a 180,?replacing?the coolant drained?with another bottle of water wetter and pure water. 


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