The shaker hoodscoop was a feared tip-off that massive performance resided underhood. But did it make that much of a difference? By the time the 1960s ended, an entire secret language had evolved ...

I don't know about you, but I love it when a mundane muscle car from the golden era hides a beefed-up engine under the hood. Because nothing beats a sneaky sleeper. But it can happen the other way ...