Quote:
Originally Posted by darcane
Most of the airflow into the radiator should come through the opening in the bumper cover. Unless there is a power steering cooler or something up top that you are trying to get air to, I would just block the entire upper.
Also, I tried to do a similar block behind the grill on my old Silverado. I believe the air pressure pushed on it and flowed around the block anyways. It was far more effective in front of the grill than behind.
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The upper grille is right over the radiator, the lower grille is fully blocked because it didn't give much to the radiator.
I don't plan on going to a front grille block if I don't need to, I like this look better