Need help with this vacuum reading

after reading all of this, 2 things.

[1st] raise the initial timing higher like 24* and limit the mech advance so it only adds 8*-9* giving you around 32*-34* total @ 1800-2200rpm.
By doing this one of the benefits is that you will now have the throttle blades where they need to be for sure, which will help with the hunting it does 'sum'.

[2nd] with 7inches vac in gear you need at least a 'real' 2800 stall convertor.

Mainly like others mentioned convertor would greatly help/fix.

Compression aint that low for the cam, I've run worse with no issue.jmo