GETTING AIR INTO YOUR engine seems simple enough, but there's a delicate balance between airflow and filtration. You could just let unfiltered air into your engine like a top fuel dragster - if you don't mind tearing down your engine after every mile like a top fuel dragster. At the other end of the spectrum you could design some complex, Rube Goldberg contraption that would filter out all particulates but choke your engine in the process. We had been running a simple oiled cotton filter on the top of the 460 engine in our 1977 Ford F-150, but when we saw dust and silt in the throttle body after a recent trip to the desert we knew that we needed better filtration.
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