Dual Tanks/Fuel Line Size Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

52Chevy4Me · 01-01-2022, 05:30 PM

First time poster, but have been getting a lot of great information from the forum for a long time.

I'm adding dual tanks on my '85 K20 build. I'm trying to stay true to factory by keeping the fuel return line as 1/4", yet all the aftermarket selector valves that I have looked at are 5/16" return. Were factory selector valves built for 1/4" return lines?

Any help on how to plumb it is greatly appreciated.

72c20customcamper · 01-01-2022, 06:15 PM

I'd have to look at my 85 k20. But it's in winter hibernation.

01-01-2022, 05:30 PM	#1
52Chevy4Me Registered User Join Date: Aug 2014 Location: Lincoln, NE Posts: 1	Dual Tanks/Fuel Line Size Question First time poster, but have been getting a lot of great information from the forum for a long time. I'm adding dual tanks on my '85 K20 build. I'm trying to stay true to factory by keeping the fuel return line as 1/4", yet all the aftermarket selector valves that I have looked at are 5/16" return. Were factory selector valves built for 1/4" return lines? Any help on how to plumb it is greatly appreciated.

01-01-2022, 06:15 PM	#2
72c20customcamper Registered User Join Date: Jul 2018 Location: Catskill Mountains,NY Posts: 8,722	Re: Dual Tanks/Fuel Line Size Question I'd have to look at my 85 k20. But it's in winter hibernation. __________________ Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary.

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