running out of breath in the 1/4 mile

diymirage said

the line from the tank to the fuel pump is the stock line that was in place when Ma Mopar build the duster, with a slant 6 in it

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I ran the factory slant six fuel line from Ma Mopar in a Dart from the tank to a 360 that went 12.9's without fuel delivery problems. I did install the Holley 80 gph mechanical fuel pump, though I didn't see any affects from the Holley fuel pump to the parts store Carter pump by how the car ran.