That is the general ideal. You drip test to find out if the pump is still timed properly. The only number of signifigance is the one on the engine damper pulley at the bottom.

Since the crank with the damper pulley turns twice for every revolution of the injection pump. The cam marks should be pretty close during this procedure.

On your 1985 there is also a simpler method where there is a port on the pump to insert a tool. You have to read up but basically you can accuratly time or check your timing without the use of the drip method. Actually more straight forward.