1966 Buick Wildcat Gran Sport Concours Restoration Guide

The 1966 Buick Wildcat Gran Sport is one of the rarest and least-documented muscle car configurations of the entire 1960s. For one year only — 1966 — Buick made the Gran Sport package available on the full-size Wildcat, giving buyers the option of either the standard 401 ci / 325 hp "Wildcat" V-8 or the extraordinary dual-four-barrel 360 hp "Wildcat 465" engine. Only approximately 21 documented examples of the dual-quad Wildcat Gran Sport are known to exist. The package was discontinued after 1966, leaving this car in a unique position: full-size muscle before full-size muscle was common.