Ya, me too. In the early 70s I did it several times without issue, probably because I didn't know any different. Then in the 80s I started having lifter failures on new cams with new lifters. I put in a new Comp Cam and had two lifters fail early. I went to NAPA and got two new lifters. About a year later another failed so I replaced all of them. Those ran for many years. That was about the time the ZDDP, lobe / lifter ordeals began for me. I would not think about using anything but new lifters these days. Not sure what changed.........
