You could extend the bowl vent on top of the carb, just cut a piece of fuel line that fits snug on the tubing. Fuel can slosh out of there, too.
Also, there are fuel bowl vent baffles available for Holley carbs for that problem.
I had a '66 Sport Fury that had a 383 two barrel. When I pulled the intake to put on a four barrel, there was a dirty, oily, messy tinfoil pack under there. I didn't know what it was, and just threw it away.
Chrysler "Wedge" (B & RB Series) Torque Specs
The following specs apply to these Chrysler Big Block engines:
Main Cap Bolts