Need Opinions. Have nothing to compare to.

Mattax said
T Vacuum at the ported is manifold vacuum. The difference is only at idle. The ported vacuum comes from a hole just above the throttle blades in closed position. As soon as the throttles crack open, that port is exposed to manifold vacuum.

I was just saying I could put a T in the line so I can have the vacuum hooked up and still have it connected to the vacuum gauge. I did check the vacuum at different RPMs and the ported vacuum seems to climb very slowly as RPMs increase. As soon as I can get a chance, I will hook up the gauge and map the vacuum as RPM climbs so we can see the vacuum curve, but I want to say I am still at about 5" vacuum up towards 3000 RPM. Looking at your advance curves for the vacuum cans below, I don't see how we would get enough vacuum off the ported vacuum to give us much advance, even if we did adjust it

Take some photos looking down as well as from the sides. I won't be able to tell you the model said
Regarding the 4 dyno runs shown.
At what rpm was throttle fully floored?
I ask because the red run looks like it could have been part throttle to 3700 ?
That would be a perfectly normal explanation for the AFR going so lean before rich.
But then why would the dark blue or black run be so different? Was the throttle brought on much more agrssively?

I can't say for sure, but he seemed to work it up through the gears into 3rd, pushed in the clutch and blipped the throttle to clear out the carb, then re-engaged the clutch and started his pull. It seemed like he accelerated the same on all pulls, but to be honest, I was watching the screen, not the throttle. I WAS wondering why the AFR have such a wave pattern and they don't follow each other. In fact, if you look at the green and red, they kind of oppose each other. Light Blue that dips below 12 was first run before he blew out the air ports (if that's what they are called) with cleaner.

I do find it strange that the dark blue line cuts out on the screen (for HP, Torque, and AFR) from 2700 - 4000 RPM and from 2900-3100 on the green run. Dark Blue run was the last one he ran, and ran up the highest in RPM. That was the one he ran after dialing the timing back down to 45 all-in (Mechanical and vacuum) after seeing the drop off from advancing it on the green run.