pontiacs don't have a adjustments the are set. chevy do. you have to soak them with oil and lub them also. if its a chev set them in with the rockers slightly loose so it chatters when running then adjust each of them slowly till they quiet then turn a extra 1/2 or what ever is recomended. if pontiac, you do have to soak the lifters with oil prior to install and use a lub for contact with the cam. set the push rods in and rocker assembly tighten them up till its snug then there is a torque amount to set them with.