Ignition timing is checked by either using a strobe light that freezes the motion of the flywheel every time the #1 spark plug fires, or it's checked with the engine stopped by aligning the timing ball on the flywheel with the pointer, and turning the distributor housing until the ignition points break. You don't have to fool with the camshaft timing at all, that stays the same unless gear teeth wear or break.
On your 216 engine there's a hole in the flywheel housing above the starter that allows you to see the flywheel rotate. Connect a timing light to the #1 plug wire, and loosem tne distributor clamp screw enough to be able to turn the distributor. At idle, with the vacuum line disconnected, turn the distributor housing until the ball on the flywheel aligns with the stationary pointer. Tighten the clamp bolt, and you're done!
Jerry
