Hydraulic roller lifter questions (LA 318)

When I did this mockup last year I believe, and I unfortunately don’t have those photos, the dog bones are supposed to rest on a recess above the bores and remain stationary. On my block (67 non roller) the dog bones rested on the rollers themselves. I could adjust preload of the spider legs on the bones with washers above and below the spider that bolted it to the valley. But because the bones would then move with the lifter, I was worried about fatigue of the spider itself. It’s made of steel, but it is thin and those dog bones are not supposed to be preloaded on the lifter and move with cam lift. So, multiple problems. Oil band coming above the bore, would have to bush the block- an expense. Possible fatigue and failure of the legs of the spider due to extra movement not designed for. I saw it as more trouble than it was worth. Either buy retro fit lifters with link bars or an oem roller block