got this from a friend-
The lines may be faint because there is 30 coats of paint on the balance.
I might be tempted to take a scraper or wire brush to the side of th ebalance and get the paint off of it, then use a utility knife to get the paint out of the lines.
I would venture to say that the center of all the lines is where Top Dead Center (TDC) is. Perhaps your balance is just marked with a "C" for center.
But at both ends of th elines you should be able to find BDC and ADC for Before Dead Center and After Dead Center.
But here's how to check. Remove your #1 spark plug
. Put your thumb over the spark plug hole and turn the balance in the engine rotaing direction until you feel compression on your thumb. Then and drop a 1/4 inch dowel at least 2 feet long down in the spark plug hole. Turn the balance with a socket and breraker bar until the dowel starts to move up then turn slowly and watch for the dowel to stop. When it does, you are at Top Dead Center, and the center of the lines on the balance should be aligned with the marker. Cahnces are good that each line represents an offset of 1 degree. So, if you need to time to 5 degrees before top dead center, mark the 5th line AHEAD of the marker in direction of travel with a THIN line of white paint. That should be what you want to time to.
But now that I've told you that, I'll tell you to forget it.
Time your truck with a vacuum gauge to the proceedure she outlines in this link:
http://www.ford-trucks.com/forums/84...e-trouble.html
It will be much more accurate, once you get the timing set with the vacuum gauge, paint a line on the balance over the correct scribed line for quick timing next time with the timing light time time.
1958 F100 292
"Nothing is particularly hard if you divide it into small jobs."
"Chop your own wood, and it will warm you twice."
-Henry Ford