My 318

This is not a live forum. You'll have to wait for someone to read it and answer it if they can. It's not like we are sitting here waiting for someone to come online with a problem.

You answer is in the timing. You'll need to retard it a few degrees and/or use a higher octane fuel. If your allready useing 93, just back it down 2 or 4 degrees and the knock should go away.

If that isn't it, you have something loose that rattles under extreme load. And that will be a mystery to look figure out.