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Fuel Pump That Reliably Delivers 4-4.5 PSI?

It is BS to say Carters are sensitive tio fuel pressure. I have run 9 psi at the strip as means of enrichening the mixture, no problems at all. Chart below comes from Carter as you can see: 10 psi. As with any carb, the float level should be set according to the fuel pressure. My loooong experience with Carter 4bbl carbs has told me that they are not very sensitive to fuel level in the bowls. The level depends on the needle & seat size.....plus the float level dimension.
Get an overhaul kit that contains new needles & seats. You can do this with hand tools. There are washers that go under the seats. Make sure they are in place.
 
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