Hughes Engines website has a really good few pages of cam and lifter installations, decreeing cams and such, use to think it was overkill but I ran a lot of his cams and never ever had any problems when using his instructions. These were all pretty aggressive cams and edm solid lifters. He was a big preacher of spinning the cam with a ratchet and making dang sure all the lifters turned. Very good articles, his oiling system instructions were a mere couple of paragraphs not in the oiling systems article but in the stroker assembly article iirc.