Velocity Stacks and Scoops ???

Please explain how the scoop is killing air flow through the radiator ? I am running a big electric fan pushing from the front through the radiator .This is a hobbie ,drag only car that sees no street use.Im not arguing or disagreeing ,id just like to know what your talking about in technical terms ,for my own understanding ,thanks...

When your hood is regular the space in the engine bay is a negative pressure zone because the air gets sucked out through the bottom. The air in front of the radiator is a high pressure zone. Together they "suck" air through the radiator. if you don't seal the scoop you turn the engine bay to a High pressure zone and mess up the air flow.

Hope this helps,

Benjamin