You need to the lifter bore tool. Coming off the lifter with the dial indicator.....how will you make sure the indicator is DEAD PERFECT straight with the center line of the lifter? You cannot. If it's not perfectly parallel with the lifter, your reading will be inaccurate. You're askin for help. I'm just tellin you the right way. Plenty of people will come on here arguing with me sayin "I've done it this way for 175 years and it's always worked, blah blah blah" and maybe they have, but if the dial indicator is not dead perfect, they've done it wrong for 175 years.