If you are priming with a electric drill, run it till you see oil flowing from each rocker arm, pull the rocker cover to be sure its oiling.
Additives will mix really quickly and the filter will not trap zinc, all oils have zinc, just not as much as they use to.
While priming the engine, rotate it slowly, two complete turns, this will fill all the hydraulic lifters if its has them. If its a solid lifter cam, you need not rotate it. Pulling the spark plugs makes it easier to turn and lets you find #1 top dead center easy. Watch the rocker arms as it rotates for oil and sequence. Stop when #1 cylinder intake and exhaust valves are closed and #1 piston is up.
Be sure the carb is full of fuel, battery is charged 100%, and coolant is full (no air bubbles). Set timing by ear once started and get the rpm up ASAP.
Do not prime or rotate the engine till you are ready to start it. Plan on at least 1 hour or more. Prime it the very last step before starting.
Have a hose handy to cool the radiator if it starts getting hot, DO NOT SHUT OFF if you can avoid it, don't let it get hot either! Have cooling fans if you don't want to get radiator wet. I find on my test stand that three electric fans along with cooling water from the hose works pretty good. I can keep 462 cubic inches cool at 2000 rpm for 20 minutes.
Good luck with your project.
Joe
