1958 was a good year for a 235 engine. You have full oil pressure. One thing you might consider is changing your engine over to a full flow oil filter system over the partial flow system it has now. During a rebuild is a good time for this change. Wish I had known about that, before I did my engine. There is an article on how to do this in the Tech Tip section on this site, along with some other good articles on how to....
John
