Timing Chain

I remember in the old days, the old-time Sock guys spent a lot of effort dealing with the chain whip, had to advance one cam over the other to account for the stretch at high RPM, cam timing would change with RPM level, if I remember right the best-case "magic number" was 8 degrees. JMHO, but I would try to avoid triggering my ignition from that point at all costs, the stock setup was driven ahead of the cam chains- the old Hilborn pumps wouldn't care if the timing was wandering around, just that they got spun at the right speed