Best way to run return fuel line - The 1947 - Present Chevrolet & GMC Truck Message Board Network

81turbota · 06-11-2018, 10:08 AM

As part of my engine swap I need a return fuel line. Is there a different pickup or an unused vent on my current tank I can use?

Thanks!

BobbyK · 06-11-2018, 10:32 AM

When I converted to fuel injection I ran the return line down the drivers rail.
There are no unused ports on the tank. I tried using the small vent line that runs beside the large fuel fill tube but that cause fuel filling issue's.

I ended up making a "T" that went inline on the fuel fill hose. Worked great.
It's just a piece of tubing with a barbed fitting screwed into it. I put JB weld around the barbed fitting just in case. It's never leaked...and it was cheap.

I think Jeg's sells something similar though.

87Skier · 06-12-2018, 02:52 AM

The ideal way would be to modify the sending unit to have the return in it.

You could buy a new sender and have a welder tig a 5/16" pipe in or whatever size you want in place. There are also pass-through style fittings that you can piece together your system with.

81turbota · 06-12-2018, 08:43 AM

Perfect, thanks for the ideas guys. I will be dropping the tank to clean it and replace the sender so I will likely go with the modification/welding route. BobbyK, the inline return is pretty slick. Sure saves a lot of work!

06-11-2018, 10:08 AM	#1
81turbota Registered User Join Date: Jul 2017 Location: Pasadena, CA Posts: 44	Best way to run return fuel line As part of my engine swap I need a return fuel line. Is there a different pickup or an unused vent on my current tank I can use? Thanks! __________________ James 1971 Blazer 350/SM465/NP205 1966 Chevelle 468/TH400 2009 Corvette Z06 built LS7

06-11-2018, 10:32 AM	#2
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	Re: Best way to run return fuel line When I converted to fuel injection I ran the return line down the drivers rail. There are no unused ports on the tank. I tried using the small vent line that runs beside the large fuel fill tube but that cause fuel filling issue's. I ended up making a "T" that went inline on the fuel fill hose. Worked great. It's just a piece of tubing with a barbed fitting screwed into it. I put JB weld around the barbed fitting just in case. It's never leaked...and it was cheap. I think Jeg's sells something similar though. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

06-12-2018, 02:52 AM	#3
87Skier Registered User Join Date: Mar 2014 Location: Corvallis, OR Posts: 715	Re: Best way to run return fuel line The ideal way would be to modify the sending unit to have the return in it. You could buy a new sender and have a welder tig a 5/16" pipe in or whatever size you want in place. There are also pass-through style fittings that you can piece together your system with. __________________ 1972 GMC Jimmy Custom 4.8L (L20)/6L90E/NP205 1989 Chevy Suburban V2500 350/Turbo 400/4.11 gears 1996 Chevy Suburban K1500 350/4L60E

06-12-2018, 08:43 AM	#4
81turbota Registered User Join Date: Jul 2017 Location: Pasadena, CA Posts: 44	Re: Best way to run return fuel line Perfect, thanks for the ideas guys. I will be dropping the tank to clean it and replace the sender so I will likely go with the modification/welding route. BobbyK, the inline return is pretty slick. Sure saves a lot of work! __________________ James 1971 Blazer 350/SM465/NP205 1966 Chevelle 468/TH400 2009 Corvette Z06 built LS7



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