Re-using Used Lifters on Another Cam

My dad has been a auto mechanic since the 50's. He worked at a chrysler dealership for 16 years. From 1963-1979. He worked on 340s hemis 318 every engine mopar put out. He says he never broke any in.

They didn't have to. Low, stock spring pressures and high zinc content allowed them to get away with it.