fuel tank plumbing questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wibilly · 06-26-2006, 11:24 AM

i replaced the tank in my 71 with a 40 tank from a 87 sub. i removed the electric pump and extended the pickup tube. the sub tand has a vent with a ckeck valve that alows fuems to escape but no air tho enter the tank that went to the evaperative canister whitch my truck didn't have , what should i do with this? add canister? plug it and use vented cap? next ? tank is also plumbed for a return line my holly fuel pump is not should i plumb this to front of truck in case i want it later or plug it at tank? next ? where these tanks get their make up air? dotheir caps alow air to enter and fuems to not escape to keep them from collapsing or vapor locking?

06-26-2006, 11:24 AM	#1
wibilly Senior Member Join Date: Nov 2005 Location: northwestern wi Posts: 2,111	fuel tank plumbing questions i replaced the tank in my 71 with a 40 tank from a 87 sub. i removed the electric pump and extended the pickup tube. the sub tand has a vent with a ckeck valve that alows fuems to escape but no air tho enter the tank that went to the evaperative canister whitch my truck didn't have , what should i do with this? add canister? plug it and use vented cap? next ? tank is also plumbed for a return line my holly fuel pump is not should i plumb this to front of truck in case i want it later or plug it at tank? next ? where these tanks get their make up air? dotheir caps alow air to enter and fuems to not escape to keep them from collapsing or vapor locking? __________________ common sense isn't so common anymore



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