All Small Six Help! Did I just screw up my new build?

[DON]

You could eliminate the pump, get an external fuel tank. From a motorcycle, lawnmower, anything that has a hose barb, then just use gravity feed it.
Don’t get discouraged, there is progress- the videos helped a lot

 

[63 Sprint]

Some of us just talked about that earlier. It should supply enough fuel to idle the engine.

 

[sixtseventwo4d]

If the crankcase has become laden with raw fuel fumes, then the PCV will be drawing that for reburning. This will cause an overrich idle. It also sounds like the ign timing needs advancing.