Establishing Initial Timing

Just give it all she can take before light ping, get an Fbo limiter plate take some timing out swap out the heavy spring for a light one and repeat if it pings or hard starts run timing back a bit 34 total is the base line depending of camshaft and compression well determine what she likes, i have 9:5:1 260/264 .453/.470 at 106 intake center line she likes 30 total timing anything after that she bitches. you can feel when your giving it to much initial timing the cars idle speed does not raise an idle turns shitty.