Roller lifter conversation

I got one and read the process. It seems as though its trying to slow flow and block and block off some oil passages. Is this necessary or will she run with out doing this. I have only assembled the bottom end no torquing. Got this racing manual and read that but this is a racing manual. I will do this if it is absolutely necessary. I have a hv oil pump. It says oil to lifters should be plugged. Probably gonna happen anyway