[Phil Waterman]

Just confirm that when the pointer is on the "dot" that the number one cylinder is at top dead center. I’ve swapped bell housing, flywheels and this is the best confirmation

You also might want to consider doing what I did which is to put a second timing mark on the back of the flywheel so that you can time the engine through the window on the back of the bell housing. This is a much handier place to check the timing. What I do while the head is off I confirm that the ball is on the timing mark at top dead center. Then with the ball on the timing mark I put a small “O” with a punch set on the back of the flywheel so that it lies under the wire marker see picture, then rotate the crank until the engine is on the advanced mark and put a “l” on the flywheel. Just remember which side of the screws to put your marker wire.