Quote:

yes you Are right I typed in the wrong numbers that is the cam in the motor 292/509



This is a big cam. Add the six pac, low compression and 10 degrees initial timing and 8" sounds right. Although I have not had this combination myself.

Personnally, I would skip the vacuum advance for now, it is just one more variable. You can put it back later.

Get your initial timing to be 20 degrees and steady (not advancing) to at least 1200 rpm. Then check for vacuum leaks at the carbs and intake manifold. Then use a vacuum gauge to adjust each carb.

That will get you started.