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Are you running a mechanical or an electric fuel pump?
Pump location will determine the length of the hardline.
The big consideration is where you must terminate the line. The flex portion of the line( not hardline) is always at the mechanical fuel pump..last foot or less. Engine vibration and torque movement dictates this.
Another consideration is to stay away from Headers/sidepipes where heat is a consideration. Any inline filters before an electric fuel pump?
I ran mine in 3/8 steel hardline right from the tank along the framerail to the mech fuel pump..last 8 inches is 3/8 fuel hose.
Total run is 106" Holley mechanical used then Braided AN 6 from the pump thru an inline filter to the carb.
Tim
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