Fantastical Smokey Yunick Experimental Turbo

It sounds like a tall tale—the sort of tall tale that a guy like Smokey Yunick seemed to inspire. The kind where most of it is true and some of it is not and your uncle swears by at least half of it . So we cocked an eyebrow and allowed ourselves a little smile when this little 1972 Chevy Vega in a very '70s shade of brownish gold popped up on Mecum Indy, brashly proclaiming that it featured a secret turbocharged motor that Yunick developed for GM. Sure, of course it does. And we have a bridge in Detroit to sell you. The tale is about as juicy as Chevy Vega stories get. Allegedly GM paid Yunick to see how much grunt he could extract from the stock L11 engine, a 110-horse four-banger that was anything but a performance engine. With a little Schwitzer turbo bolted onto a custom manifold, a ported head, and a rejected Rochester 350 cfm two-barrel carb, this experimental motor huffed a full 7 pounds of boost. And then … GM killed it.