340 timing questions

Its a factory untouched vac dist and electronic ignition

Bare with me Rob....:D

First of all,this test is with vacuum advance plugged.
Make sure the car is warm.
For a baseline,set your total at 34
Now see what your initial is.
Take it for a drive.
How's it run ?

Do that and get back to us.
From the looks of your build,you probably will have to run more initial,and tweak the amount of advance built in.
Or you might like it right where it is.
Let us know.:burnout: