I was just putting in my mechanical lifters in my 235 and noticed one was different from the others. There is a hole straight down from the top where the rod sits and two holes on the side. The other are all solid. Is this one from a 216 that possibly got switched at some previous rebuild? This lifter is badly worn and pitted on the cam side, the other are in perfect shape. Any input would be greatly appreciated. I'd like to change this one so it doesn't wear the cam, and so oil doesn't leak right through. Or is this a special lifter with a special purpose?
