How do you cool you motor in between passes?

Well, maybe I need to tell you about the current setup:
The car (duster) is a fully gutted race car. The motor is a 5.7 GenIII hemi stroker. It has a super tall drag pak intake manfold and a Holley 1050 Dominator on top.
I have an OEM belt driven water pump. It is the only thing that is belt driven, no alternator. The GenIII's are designed to run at a higher temp than the classic motors. They come with a 204 degree or higher thermostat stock as I recall. I'm currently running a 160 degree thermo in it and an oversized aluminum radiator with a huge shrouded pusher fan in front of the radiator. So far, in the 90 degree heat here in Tx, I can start the run with the water temp at 180 and it will finish the run at about 210 or 220. I leave the pusher on in the pits for 5 minutes and the radiator is cool, but is that really cooling down the whole motor? I also put a box fan on top of the radiator angled down at the motor, mostly it hits the carb and intake. Maybe the carb is the only thing that I need to keep cooler than the rest, maybe it is okay like it is. I do know that I can run the 8th mile with the temp starting at anywhere from 180 to 210 and it makes no difference in how the car performs. Maybe I'm trying to fix something that isn't broken?
http://i1285.photobucket.com/albums/a585/CenTx2012RT/Drag Car/Install03_zps290a8e79.jpg
http://i1285.photobucket.com/albums/a585/CenTx2012RT/Drag Car/Install01_zpse3c5d0f2.jpg