47-55.1 Does this look familiar to anyone?

[leegreen]

The pressure in the fuel system has to be higher than the pressure surrounding the carb. Unless there is higher pressure right next to the supercharger outlet the most likely flow in that line is from fuel pump towards supercharger. From either side of the pump you'd get fuel at that line. 1/8" of fuel squirting into the the intake would be a noticeable problem.

If the hole drilled in the pump is near the mounting boss of the pump it might in affect be venting boost pressure into the engine block. That does not make sense.

Both options are weird. This engine was built back in the days when little was known about turbo or supercharging in the hot rod world. The line may be a mistake