yes is amazing what the little tune does. Static was 20 advance unintentionally - I tried to hit 10 deg. and I did not check it ASAP - it was extremly hard to turn the crank in the right position by hand/tool. So Engine did sound terrible..no nocking though rev up to 2500 on first 20 miles! (I have done old Posches and VW engines at my student age, it was easier as much smaller cid and les compression).
René: much more brutal than my C2 67 Corvette Con. (and that C2 is good!), and I tried only up to 3400 rpm..mainly 3rd as need rpm variation to run in..
Bosswrench: top to know, after the team's work on final calculation and fixing my mistakes +/- 10.5 is where I got, yes modern heads (Trickflow), modern cam (Crane). I could sense the smooth running by turning the distributor in (5 deg) and out (20 deg), <15 deg. did sound very smooth - well roller as usual a bit noisier - , I could go higher to 18 was still ok, but turned it back to <15. That goes with your real life experience! And my dynamic advance will take it up to said 30 deg. max. Tx for the experience based info.
Honstly, I got a bit nervous after the very expensive rebuild on my cat's engine that it might not be good. The build was done by a Germany mashine shop, known for US engines with good reputation but the final design and parts and calculations I did mayself based on George's docu and the Book from Tom Monroe..