Originally Posted by nanmer
So what are you saying to just replace the fuel pump like from an auto parts store and i should automaically get 5 psi. At least in theory.
Just out of curiosity the truck was sitting for 2 yrs. Wonder if trash in gas tank would have anything to do with it.
Choose from one of these Carter Muscle Car pumps, they seem to do a good job on a street motor. Trash in the tank would restrict flow. That does not seem to be your problem. Install a good quality fuel filter in the line and rebuild the carb. There could be some junk in one of more of the passages or in the fuel bowl, where it could restrict flow into the main jets.