I did a lot of research and compared a lot of cameras before I bought these for my 1967 Chevy truck with the original 327. I went for a top-end rebuild and upgrade the top end with the help of multiple 2.02/1.6 valve heads and an Edelbrock intake. This extreme energy cam sounded like it would go well with a street engine and has plenty of low-midrange torque as well as good power. The truck runs great with good idle and pushes my heavy truck with lots of power!