An attempt to pay back for all the help.

In a attempt to offer feedback re all the excellent help I received from many members re the ping thread, I am going to see if I can share what I learned.

I bought a brand new distributor and took it apart. I wll be posting pictures.

Thx to infor I found from crackeback I now know that the distriutor I have as well as the one that is in the car has 15 degrees 30 degrees crank mechanical advance available. My digital mic shows the slot in the advance plate to be .475 inches which is 15 degrees.

So now I need to go through the process. Yup gonna use a piston stop to identify the true TDC. Make sure the harmonic is not slipping. Omce that is done I will create a degree tape. Then tune to best idle based on vacuum. Drop back 1 inch. Again thx crackedback. So now the big question. I know that a supposed expert tunner set the initial to 22 BTDC. Now yes is the mark on the damper accurate. So for now lets assiume it is. So if 22 BTDC is the target for a good idle with this cam, then it does not take a rocket scientist to figue that a diss that provide 30 degrees mechanical is going to result is some major PING, if not outright detonation.

So once I establish the correct initial based on the vacuum approach I will then modify my new distributor to offer no more than 36 degrees total advance mechanical.

So once again the chart crackedback comes to the rescue. If I have 22 initial and I need 36 total, then I need 7 degrees at the distributor. And that is a slot reduced to .355 inches.

Just starting to learn.