my slant buildup

volaredon said
What would sludge buildup in the rocker box have to do with lash setting?
And I went with positive seals, I did ask about clearance between the tips of those and the bottom of retainers, we talked about what my gross lift would be, when I picked up the head they said that the took care of that. I don't know what they set spring installed height to, can check when I get home from work. I'm thinking they went with stock specs for an unmodified slant head, I did provide stock 318 springs for them to put on/which I see that they did.

The sludge build up in the rocker box inhibits lubricating oil from getting to the valve stems for lubrication. My comment was in reference to the fact that newer cam grinds tend to move the valves faster, opening and closing but with today’s engine oils the valve trains ‘splash’ lubrication is improved as it does not have to get around the crud that the oil from the 70’s built up. So the faster valve train action (tighter lash) is nothing to worry over.
Does that make sense to you now?