1969 Daily Driver

This is a big thank you to slantsixdan. Here is the problem that I have been having after installing the HEI conversion, pinging. This was only a problem going up hills over 65 MPH. I started trying to fix it by backing off timing, at 2 degrees after the car was a little sluggish off the line but still pinged after 20 miles of drive then going up hill. I was thinking that it was running lean so I hooked up my wide band to the tail pipe just for a quick read and that was slightly lean 13-1 but not to cause that. Then I thought maybe with the hotter spark I needed a cooler plug so I started dropping temp on the plugs and that still did nothing. Last night I was up late just surfing the web and slantsixdan had a link on some random link that said "If you have spark plug tubes that you should remove the crush washer because it would insulate the heat and cause pinging." Also he said that "You should use NGK plug ZFR5N stocking #3459, because this plug will project into combustion chamber better." Well first thing this morning I did just that and BOOM no more pinging and it has more power. Win Win. Hey that is what these forms are for learning from people who know and I know nothing about tuning these engines. So thanks again slantsixdan.