[wizard]

Mine runs a little hot in traffic. No Thermostat. Picked up on an earlier thread about Edelbrock water pumps and became convinced that was the sloution. Jegs catalogue had restrictor plates next to the water pumps. Now I'm confused. Called Edelbrock. Explained my delema. Now this is a first rate company. Knowing that my credit card was at the ready, Edelbrock said put in the thermostat. Could have sold me a $250 pump. Didn't say why though, but Mr0077 gave me the final clue to the puzzle. "Pressure" Should have realized this from some heating and cooling applications I have at work. More pressure means a higher boiling point so you are less likely to have vapor pockets in the block. More liquid contact means more cooling. Having said all that, it's all theoretical until I install the thermostat that been sitting on my shelf for a year or more and prove it this weekend.