[Jim/GA]

If it is a click or a tick, it is most likely a lifter. Don't worry about it.

Put 2 oz. (1/4 cup) of Marvel Mystery Oil into 5 gallons of gas (you have a ~10 gallon tank, so 1/4 cup when the tank is half full). Drive it. That will lubricate the valve stems.

Anything else other than a lifter will sound more like a knock than a click or a tick.

I assume it changes frequency with engine RPM. It should.

The one thing you can do is, while the engine is running and ticking, use a long screwdriver to short out one plug at a time and see if the ticking sound goes away as you short each plug out. I doubt it will.

Place the tip of the screwdriver on a stud, then bring the shaft of the screwdriver over to the top of the spark plug. You should notice RPM dropping a little when you do, then go back up when you move the screwdriver away.

If the ticking stops when you short out a plug, it's a connecting rod thing.

You could get another Model A owner to come listen to it. Where are you?