The 1966 GTO did more than give Pontiac a sales hit. It nailed the formula for an affordable, stylish, big-engine performance car and set expectations that still shape what buyers want from a muscle ...
The Pontiac GTO was born at GM’s Milford Proving Grounds when John DeLorean and a group of engineers gathered to test a prototype 1964 Pontiac Tempest that had been stuffed with a 389 cubic-inch V8.