Chevrolet’s Fabulous 409 CID V-8. It was introduced in 1961 at 360 HP, it grew to 409 HP & then to 425 HP in 1962. By 1963 it was the mainstay of Chevrolet’s performance stable. Learn About it HERE over-drive-magazine.com/2022/06/27/c... #Chevrolet409 #ChevroletPerformance