(1.500cc normally aspirated)
Amid protests specially from the British teams and manufacturers, CSI, the predecessor of the FIA, decided to reduce displacement to only 1.500cc, which meant much less power and virtually forced all teams to change to rear-engined cars. And started a quest for “the lighter, the better”, which made Formula One engines become pieces of jewellery. Question is that only Ferrari was really ready to the new rules, having developed a V6 that became champion with Phil Hill. At that time, Climax and BRM needed to rush to produce their V8s, using initially inline fours that were neither powerful, nor light.
But things changed on 1962, when Porsche also joined the fray, and BRM gave Graham Hill an engine powerful and light enough to smash competition. And the then less-known Honda made its first attempt in 1964, with an impressive V12 that won its first GP the year after (Mexico, with Richie Ginther). Medium power, that started with “tiny” 175bhps, jumped to 220 five years later, when finally that generation cars matched and beat the lap-times of its predecessors.