360 Block Lifter Ticking

If he is lucky he will not have to pull the intake but will have to pull the rocker assembly. With a strong small telescopic magnet about 6" in length he can pull the lifter out from the open port beside the push rod area. I have done that and it is a whole lot easier than removing the intake.
I also did that but had to fish the lifter to one end of the head due to cast flashing. Pull the intake. get some solid lifters and install push rods and adjustable rockers. You'll never regret that decision. You'll thing you installed a new engine with the power increase.