Well as some of you know and others may not I have had lifter noise going on since I did a rebuild back in January. For those who dont this is what I have as far as valvetrain goes. Stock 302 block ,stock heads, Cranes beehive springs support 550 lift, ford racing roller lifters, trick flow pushrods, stock pedastal 1.6 steel rockers and a 303 F cam. I have tried it all and have not for my life been able to get rid of the lifter ticking. Its quiet at idle and gets noisy when you rev it up or drive it. So I finally after consulting witheveryone else decided to call Frod racing this morning and they said I will never get rid of that unless I put the stock cam back in it. They said as long as I have the F cam or larger in there it will always have the lifter noise.