Correct me if I am wrong but the only Edelbrock hemi head needing special piston notching is the latest edelbrock head with the big intake - the exhaust has a different guide angle requiring the special notch. The earlier edelbrock head sold through Mopar Performance ( with conventional valve train oiling ) does NOT need the special exhaust notch.

Last edited by Transman; 09/27/17 10:15 PM.