[panhandler62]

Pinging can be caused by a number of things but the most common cause is using too much advance for the fuel grade/compression ratio you normally use.

You want to read the mark that appears on the balancer at the index mark as the strobe hits it. To the left of center is advance and to the right is retard. I don't rememebr the spec right off but I think a fairly stock motor starts about 8 to 10 degrees of initial timing. (Look that up.. it's early and I'm tired!)

Your initial timing might be ok and you still have ping. That could be caused by having too large of an advance curve built into the distributor.