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Six questions about a car that outran its own rulebook, an engine they called the elephant, and a black-and-gold Pontiac that Hollywood turned into a sales machine — all true.

Your first question:

In 1964, General Motors had a strict rule: no engine bigger than 330 cubic inches in its mid-size cars. Yet that very year, Pontiac stuffed a monster 389 V8 into the Tempest LeMans and called it the GTO — the car that kicked off the muscle car era. How did Pontiac get away with it?

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