How tight to set solid lifters

Just expanding on what NBT said in post #2.
Set at about 018-020 as a starting point, not critical, but make a note of what you start with. Have tools, feeler gauges ready for quick valve cover removal. Get engine to operating temp & QUICKLY remove a valve cover while hot. Find a loose rocker, measure the lash & record it. Leave overnight & measure the lash again when cold. The difference is your hot/cold setting. I always lash sol lifter cams pretty tight, about 012-015 at operating temp. It does not do any harm & the valve train is quieter; also, it leaves more of the lash ramp to absorb the inertia of the valvetrain.
Rocker shaft engines like the SBM & BBM will probably have a slightly greater hot/cold [ .001" - 0.003" ] difference than a SB Chebby that uses a rocker stud. This is because the stand for rocker shafts is alum [ more expansion than steel ], whereas the stud is steel.

The EOIC method is a lot time wasting wrenching when the 4 position method is much easier.