QUOTE(VaccaRabite @ Apr 6 2021, 01:04 AM)
At about 5 pounds you will overcome the floats and flood the carbs with fuel. BTDT.
The pump will work but you will need to have a regulator in line.
Zach
for some reason my Carter/CB pump ran more pressure than the max listed unregulated with a quality gauge,set up the pressure to 3.5psi and got a small amount of spill over from the fuel bowls,reset to just over 3 psi and haven't had any issues since.
When I rebuilt my carbs I did a bench setup to make sure the float levels were to spec using the PMO level gauge,found this very handy as was pleased to see they were correct with the new washers and float valves from the kit,its also a good thing to measure the pump delivery on each throat.
Setting the pump delivery was a PTA due to the system on the Zeniths but got there in the end.
In summary pump pressure is important but float levels must be even also,good luck Tom.