guys i really just want to kow what to do to them to get the most power there going on to a 383 and i need to know what all should be changed the springs valve size what to do
thankx

 

Remove press in studs and replace with screw in studs. Port and polish. What are the spec on the cam you will be using? If you will have high lift, you will need to do some vavle guide work to accept the high left and spring pocket as well. Recommended to use 1.6 rockers unless you are running a big cam.