Vlave Spring and retainer question

Stang_1973

Founding Member
Jul 13, 2001
565
9
38
San Antonio, Tx.
I have decided to go with a crane energizer cam and would like to get the matching valve springs. Jegs sells the valve spings alone and a kit that has springs and retainers. Do I need to get the retainers or will my stock retainers work with the new springs?