Thanks for the replies and the link..
I don't think oil supply is the whole problem.This is the second summer that the lifters have been in the engine.I would think if supply was the whole problem the lifters would have given trouble in the first 500 - 750 miles.He didn't call until the valve train started to make noise.
Once he drops of the engine and I take it apart I'll have a better idea of what went on.
I just feel bad because I talked him into these supposedly end all be all roller lifters.I guess it's best to stick with what knowingly works.