Pontiac Trophy 4 engine

The Trophy 4, also called the Indianapolis 4 or Indy 4, was an inline four-cylinder engine of 194.5 cubic inches (3.2 litres) built by the Pontiac Motor Division of General Motors for the 1961 to 1963 model years. Pontiac made it from one bank of its 389 cubic inch Trophy V8, so it had the same bore and stroke, shared most of that engine tooling and about 120 parts, and could run down the same production lines. Its only application was the first generation Pontiac Tempest, whose flexible driveshaft and rubber engine mounts were designed to tame the vibration of so large a four. It was dropped when the Tempest became an intermediate car for 1964.