What air cleaner base is NHRA Legal?

[Bobby DiDomenico]

Originally Posted by Lew Silverman

We've been told that an OEM or OEM-style air cleaner can be used, which means a K&N base is OK, but not the stub-stack. I'll venture a guess that a custom molded base doesn't fit some folks interpretation of what an "OEM" air cleaner should look like. There are a number of threads on air cleaners in the tech section that explain it much better than I can.

Lew

Lew,

Ran the stock A/C assembly because of a hoop scoop, but always thought that OEM would mean what came on the car with that silly little tube with the exhaust stove top warmer snorkel assembly on most cars. I know nearly everyone runs either the flat open base or flat base with open element style. One of my guests yesterday was shocked upon seeing the 6" (?) dia. pipe and element on a new Cobra Jet.

Can anyone really runs 10's thru a 4 square inch hole? Guessing whatever they allow is ok as long as it gets "factored" into the equation...