816/360 Magnum Guys FYI......

To the best of my ability, I have found out some info of interest to you.
i hope it is correct. Comments Welcome
Bone stock , unmolested short block
360 Magnum
hughes 1110
Spring kit

The rate of permissible lift before possible valve collisions was not advertised. Upon full short block assembly, the clearance between the top of the valve guide to the retainer was about 20 thou. Which won't work for me . Others have said no problem with cams around .500 ish lift.

So, Hughes does have a kit that will definitely settle the issue.
Hughes Engines 1110SVK kit,
Mav .550,
lift retainers clearance up to .540 lift.