total timing is set at what rpm

Mine comes in 35 at 2500 rpm. To get that though my base timing is 18. Seems high but car does not ping. Should I bring lower to about 10-12 base and recurve to 35 @ 2500 rpm. stock 360, 904

Mine on my 408 with small cam is total 34 degrees at 2500 rpm...if yours does not ping or detonate and does not kick back on starter..you are fine. More initial gives better low end and mid range torque. In the past I have seen guys set the timing initial at 10 or 12 degrees thinking all is okay...however when the engine was at high rpm total timing was over 40 degrees because of worn out dist and springs. That much timing can cause engine damage. Just my experience.