Curious how everyone is routing the Earls fuel line? I’m running a Holley efi tank with an internal pump. Supply and return line to Holley fuel rails for my 5.3ls. Preferably not wanting to add or create any additional holes in the frame, body, etc. 68 camaro
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Adding a few new holes in the floorpan for clamps on the rubber lines will be needed. Better to secure it away from any heat or vibration vs having a fire.
Best option for fuel line long term is a hard line front to rear with the AN line to the tank and to the rails. Runs along the stock path. Couple clamps to hold it down and away from vibration or heat sources.
I use the Right Stuff line and cut and flare it for AN. One cut and flare near the tank. AN adapters for feed to the regulator. AN lines to the tank from the regulator. Another cut and flare near the passenger footwell area by the subframe. AN line to the fuel rail.
I buy the Fragola premade AN lines to make my life easy. Leak free everytime. No AN lines to make that I have to pressure test for leaks. I do pressure test the entire system and blow it out before I run gas thru it.
I run hardline front to back roughly following the factory lines. Then short AN lines at the tank and fuel rail. I’m not comfortable running soft fuel lines front to back.
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Adding a few new holes in the floorpan for clamps on the rubber lines will be needed. Better to secure it away from any heat or vibration vs having a fire.
Best option for fuel line long term is a hard line front to rear with the AN line to the tank and to the rails. Runs along the stock path. Couple clamps to hold it down and away from vibration or heat sources.
I use the Right Stuff line and cut and flare it for AN. One cut and flare near the tank. AN adapters for feed to the regulator. AN lines to the tank from the regulator. Another cut and flare near the passenger footwell area by the subframe. AN line to the fuel rail.
I buy the Fragola premade AN lines to make my life easy. Leak free everytime. No AN lines to make that I have to pressure test for leaks. I do pressure test the entire system and blow it out before I run gas thru it.
Ok thank you for the information. I think changing to hard lines is the route to go and run them down the passenger side like the factory did with the clamps. Curious if I need 2 lines or 1 line ran total? Supply and return from the tank? Or just supply? Then supply and return at the fuel rails? Of course I need to run the regulator not sure what side and the fuel filter too.
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I run hardline front to back roughly following the factory lines. Then short AN lines at the tank and fuel rail. I’m not comfortable running soft fuel lines front to back.
Thank you, can I get by with just running one hard line from the tank to the fuel rails? The tank has a supply, return, and vent with the pump internal to the tank. I have the Holley fuel rails, do I need to plug one side or use a crossover, etc?
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I ran mine along the under carriage, along the subframe... single piece lines from tank to fuel rail.
Generous helping of heat shield wrap any where near heat sources.
Also, make sure to get at teflon. The rubber stuff has become notorious for allowing vapors to bleed through and stink up the garage.
I've had my Teflon lines like this for almost 20 years now and zero issues.
Got it, thank you. Yeah I bought the Earls because I’ve heard good things about them but I think I may like the hard lines like factory better if I can do that.
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Hardlines down the chassis with flexible teflon lined lies at each end is my preferred setup. One or two lines depends on how you are regulating the fuel pressure, and location of the regulator. I have in-tank pumps with a Vaporworx controller that bypasses at the tank, so only one feed line needed to the front. If the pressure regulator is up front on the rails for example, you'd need to add a return line to the tank. Many people use the factory 3/8" hardline that was used for the carb as a return line.
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Earls fuel line routing
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