The 1966 season was significant, as changes to the F1 formula had allowed an increase in engine capacity from 1.5L to 3L. This then was the first opportunity for many teams to test their new cars against top-line opposition.
The 1966 season was marked by significant changes to the F1 regulations, which resulted in a substantial increase in engine capacity from 1.5L to 3L. This change provided an opportunity for many teams to test their new cars against top-level competitors.