The 1966 Monaco Grand Prix was a Formula One motor race held at the Circuit de Monaco on 22 May 1966. It was race 1 of 9 in both the 1966 World Championship of Drivers and the 1966 International Cup for Formula One Manufacturers. The race was the first World Championship event of a new era for Formula One, for which engine regulations were altered from 1.5 litres of maximum engine displacement to 3.0 litres. The race was the 24th Monaco Grand Prix. Round 1 of 9 · 1966 Formula One World Championship May 22, 1966 Circuit de Monaco, Monte Carlo, Monaco Podium: 1. Jackie Stewart · 2. Lorenzo Bandini · 3. Graham Hill Wiki link