[Michael C Henry]

Back in the day(69) I had a Ford cam C8AX-6250-D .600" lift and 330° duration) .I had double springs with dampers .The iron heads were machined for Prefect-Circle valve seals and the spring seats to keep the spring bases located. I had shell lifters and Crane tubular push rods. I had to replace bent push rods on a regular basis. All this was in a 406 +.040". I don't have the behive springs but as I understand it their advantage is primarilally smaller (thus lighter)valve spring keepers.Coil bind is a potential problem. I'd look into it now.