What is the dist advancement on a W5 motor?

Where Are You From? Utah

Do You own a car built by Durant? M4

For starting it should be retarded, which is perhaps 3 or 4 degrees before top dead center. When running, advance it as much as you like. If it's advanced too much, you will get knocking and lost power. When climbing hills, or idling along, you may need to retard the spark to get more lugging power without pinging.

Do You own a car built by Durant? Yes