Fuel lines - Third Generation F-Body Message Boards


LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Fuel lines

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Old 06-19-2017, 10:33 AM   #1
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Join Date: Dec 2005
Location: St. Cloud, MN
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Car: 1984 Trans Am
Engine: In progress 6.0 LS swap
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Fuel lines

Hey everyone.

Swapping to LS from carbed car. Years back I had already swapped my barbed hose ends for the AN compression fittings and they never leaked. These are the ones with the copper compression fitting in them that tightens down over the tube.

Will these work with the higher pressure the LS requires for FI or do I need to swap them out?

Fuel pump is wahlboro 255. Installed it about 10 years ago when I went to the compression fittings during my last engine swap. I swapped my 305 for a 355 and got rid of my mechanical fuel pump. now the 355 is going for the LS.

Link here and picture below.

Russel AN compression fitting




Last edited by Ozz1967; 06-19-2017 at 11:54 AM.
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Old 06-19-2017, 02:20 PM   #2
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Join Date: Sep 2005
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Re: Fuel lines

Those are only good for 50 psi max.
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