We have discoverd though our engine guys at K@M machine here in K.C. that ther is some help.We had lost several cams in the chevys over the years and they said Crower lifters would help they povide extra oiling on the lobe face provided by a machined flat that runs the length of the lifter.I was willing to try it and we did with outstanding sucsess,we have not lost a cam since.All our non roller rebuilds get the Crower lifters,im not shure about the ford applications but give them a call they do alot of Ford HIPO engines as well as regular rebuilds iv used them exclusivlly for years and they have my trust ther #is 816-353-4422 hope this helps
...WB3