Percolation? Heat soak? Don't drive during summer??

Before I put the AC condenser and 12 inch pusher fan out front of my radiator of cruise down the freeway on a 85 degree day and seen my temperature drop down to a hundred and seventy. I wasn't freaking out at all. Actually little curls of a smile were formed... Now with the extra crap blocking the air flowing into my radiator I see about 180 on the freeway it may dip just a hair below that or depending on how hot it is it may be up to 185 at the most....