If a particular engine can take full mechanical advance at a relatively low RPM, then why can't it take even more advance at redline RPM?
For an example, let's say a 340 can take a full advance of 35 degrees at 2000 RPM, why can't it take, let's say another 10 degrees for a total of 45 degrees at a 6000 RPM redline?
Any of these examples are at W.O.T. dump, no Vac advance.
Thank you.