Chevrolet Chevelle SS 454
In the early â70s, hood scoops were an obligatory part of muscle car design, whether they were functional or non-functional. Most of them were just big openings allowing air to flow in and out of the engine bay. However, Chevrolet had an interesting patent in the form of a cowl induction scoop.
It had a driver-operated opening located just below the windshield glass. And apparently, it provided better airflow than a conventional scoop. But in the case of the mighty Chevelle 454 SS, every bit of air was necessary to deliver the 450 HP factory rating.