Where you the number 1 piston on the distrubutor cap for a 305 chev engine?

To find the terminal on the distributor cap for the #1 sparkplug on this engine turn the engine by hand and find top dead center (TDC) for the compression stroke of the #1 cylinder. This is accomplished by removing the #1 cylinders spark plug ( # 1 cylinder is the one toward the front of the car on the drivers side of the motor ). Rotate the crankshaft by hand and listen to hear the air escaping from the spark plug hole. On the compression stroke the hissing will be louder than on the exhaust stroke. If you aren't sure take off the valve cover and observe the valves as you turn the motor; both will be closed on the compression stroke but on the the exhaust stroke on will be open. When you find TDC for #1 the rotor will be pointing almost directly at the #1 cylinder. Put the distributor cap on and the terminal the rotor would ignite at that point is the one to put your #1 sparkplug wire on.