It does depend on what type car you're running. For example we run 3 door cars and 2 dragsters on alconol. we have cooling systems on all the cars, but rarely turn on the pump on the door cars, due to the air comming in around the motor. the dragsters however since they are rear engined run a little warmer, so we turn the pump on after the run for a few minutes.
I personally have made 5 passes in 1hr 15min. at Memphis at 100 degrees in my door car and never turned the pump on, and the temp. stayed below 200 degrees. I have a blown alcohol sm/blk with no water or no cooling system, be donot run round robin with it. Most of the blown cars donot run water/cooling systems.
Just my .02 cents
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