I'm curious as to what your initial timing was set at and where you wound up.
Well, I'm ashamed to say I can't hardly read the #'s on dampener but I'd guess about 7-10* AFTER TDC when I checked it initially. Yes, AFTER! The wrong side of the tab so I knew I found the reason immediately. I had checked the distributor and it was tight so I couldn't turn it by hand and I hadn't gotten on it since (sticky linkage clearance FIXED)
But here's the story:
Not long ago I stomped on the go-pedal and it went to the floor & didn't come up! I thought What The ____ & turned it off, coasted to a stop (eventually)(and BTW it NEVER stops pulling which to put it mildly was very exciting- in a bad way. I was well in to 3rd when I attempted to let off...)
Just before it died it 'rattled' a bit. I thought I'd blown it up but bonked the kickdown lever & shifted the air cleaner housing a litte bit and it fired right up w/o any effort or hideous noises, smoke and/or etc.
So I suspect that incident adjusted the timing for me.
Like I said, I checked the dist. and it was very tight and I had only been puttering around in it a few times since with a little longer to fire up the only symptom. It seemed to cruise around just like before so I did not notice a big performance issue until I got stuck in traffic at that accident 2-3 weeks ago. Anyway, sorry for the long blabfest, the short answer is initially it was 7-10 ATDC and now is approximately 14-16 BTDC which is a little to much as it wants to ping a bit. I'll pull a little out and get it dialed back in.
I don't remember what the total is at what RPM. I'm still
looking through my paperwork to find that info.
IIRC it is 14* @ 700 RPM and 34-36 all in at around 3500 or lower?
I do not run a vacuum advance right now (it is MSD, the builder changed the springs in it to ?) but want one and have a FireCore RT, coil & wires on the shelf.