Hmmm....the chart goes up to 1960, I have a '62 engine. In the web searches I've done, seems all the Hydrualic Lifters have a clip (circlip) in the top of them. Mine do not have that. The Mechanical Lifters & Hydraulic look almost the same from the outside, with the exception of those circlips at the top. Just not sure if that applies to 1962 vintage or not?
