340 Hydraulic Roller Available?

If you gotta have a roller lifter, use a HR lobe, use solid lifters on it, and lash them at .0015-.0020 cold and run it.

This works well. We did this to my oldest son's 360 a couple of years back. His only vehicle.We just ran through the valve lash Saturday, the first time since early spring, and it was a waste of time. He could have waited until this coming spring. His cam is an Oregon regrind and it works best with .003 lash.
Very reliable, setup with 273 rockers.