I mention pinging because if there was no pinging when driving then there is no way you could have that much advance. If driving the car you had no pinging then your timing light is wrong or dial is wrong or something. There isn't any pump fuel avail that would allow 50 Degree's advance with out it pinging. It was only meant as a quick check to see if timing light was working right. I'd recurve the dist. I did mine. Car wants 22 degrees initial. Curved mine for 38 total in by 2800 rpm. I have the MP dist with adjustable advance.