[Mitch Leland]

Hal,

I should have known you had that figured out... My last trip to California I pulled into Tucson and it was 111 degrees. In traffic at those temps my engine gets very hot, but doesn't boil. I haven't figured out the difference in cooling from my Escalade (LS1) to basically the same engine in the 996 (LS3) why the cooling in the 996 doesn't perform as well. I've got over 6 gallons of coolant in my car, albeit the engine is in the rear and probably doesn't get the airflow that when it's in the front?

Maybe the mechanical water pump moves more water than the electrical water pump? However I'm guessing if you move the water too fast then the radiators won't do their job... The point is that the front mounted engine in the Escalade will idle all day in high temps without getting hot, I still can't do that in the 996 conversion. For most driving it's rock solid at 190 degrees.

Maybe some Sunday morning meet half way for brunch...