SEMA Heritage

SEMA Heritage: Chevy Small-Block and Traco Engineering

It’s December 1967, and the men about to fire that Chevy small-block on the engine dyno are Jim Travers (right) and Frank Coon, founders of Traco Engineering. Commanding their attention is a Trans-Am race engine—possibly destined for one of Roger Penske’s Sunoco Z/28 Camaros—and Car Craft magazine’s Bob Swaim is chronicling “Traco’s magic touch” to see how the legendary engine builders squeeze more than 400 hp from “a basically stock 301ci engine with the Z/28 options.”

More Air=More Horsepower

Framed by those tall velocity stacks is Bruce Crower, photographed late in 1966 for a Car Craft magazine article about his then-new fuel-injection systems for big-block Chevy engines. The air/horsepower equation in our title was the story’s title as well, referring to Crower’s “deep breathing” injectors. Unlike other injection systems on the market at the time, Crower’s injection manifold featured gaping intake ports that were nearly 3 inches wide. Those injector stacks could be mammoth, too—as tall as 14 inches, depending on the application.


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