fuel line identification on dual tank system - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Earl Filter · 05-21-2005, 10:16 PM

I took the passenger side tank off my '77 C20 and cleaned it up. This is a dual tank truck, but only the passenger side is hooked up (I got it that way). Off of the fuel sender/pickup on top of the tank there were 3 lines:

The big, fat fuel line to feed the 454
The middle one was about 3 inches long, and had a plug/vent thingy on the end
The third is the smallest of the 3, and went to a hard metal line on the frame that went up to the front of the vehicle.

I couldn't trace the third line, as it was getting dark, but it went up to about the right front control arm area, then went somewhere I couldn't see. What is that line?

05-21-2005, 10:16 PM	#1
Earl Filter Registered User Join Date: May 2005 Posts: 212	fuel line identification on dual tank system I took the passenger side tank off my '77 C20 and cleaned it up. This is a dual tank truck, but only the passenger side is hooked up (I got it that way). Off of the fuel sender/pickup on top of the tank there were 3 lines: The big, fat fuel line to feed the 454 The middle one was about 3 inches long, and had a plug/vent thingy on the end The third is the smallest of the 3, and went to a hard metal line on the frame that went up to the front of the vehicle. I couldn't trace the third line, as it was getting dark, but it went up to about the right front control arm area, then went somewhere I couldn't see. What is that line? __________________ Real Name - Brandon Current Vehicles: 1977 C20 Silverado 454/TH400 3.73s 1989 Jaguar XJ6 in the middle of an LT1/4L60E swap



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