[Ben M.]

As Keith said, it is a tapered snorkel for noise reduction. It also is a controlled opening that allows the factory to use a valve to control the temperature of the incoming air. Using exhaust heat on the heat riser instead of cold under hood air in the early mornings makes the car warm up faster.

That said, open element air cleaners were only used on 400 HO cars in 1967 from what I've seen and been told. Everything else had a snorkel.

[Darth Menace]

thanks for the info. I guess I just am not as keen on the look of it. Also, from what I see the snorkel is 3 inches tall, so that also answers my question of being able to use a 4 inch air cleaner in it