Pontiac joined the American big block V8 rivalry with its rare 421 Super Duty engine, showcasing its dominance on the track in the early '60s. The high-revving 421 V8 boasted impressive specs ...
For a mere $650, exchange, Royal will snake out that overworked little engine in your GTO and slide in the 428, all prepared for action. And now, speed-crazed sports fans, Royal Pontiac has ...