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10-27-2013, 11:29 AM
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#1 |
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Registered User
Join Date: Oct 2013
Location: Central Texas
Posts: 2
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Fooking for a '72 fuel tank fuel line and vent line routing diagram?
I'm looking for a diagram that shows where all the lines from the fuel tank go in the truck. I have three that go below the floor, I assume fuel line and vents, but there are also two that go up into the roof? Where are those headed? Does anyone have a routing diagram that shows how these are routed in the truck?
I have the tank out and I'm replacing all the rubber hose pieces, and want to make sure all the other ends are connected where they should be. Thanks. |
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10-27-2013, 11:38 AM
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#2 |
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Registered User
Join Date: Jan 2013
Location: New providence ia
Posts: 1,018
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
The roof one u are talking about is a vent should go up passenger piller and loop back down
__________________
72 GMC super custom. 
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10-27-2013, 12:04 PM
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#3 |
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Registered User
Join Date: Oct 2013
Location: Central Texas
Posts: 2
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
Fair enough. Seems like all three end at the frame rail near the fuel pump. One is fuel, the others are just open to the atmosphere. I assume they should be connected to an emissions can and a vacuum line? Need that routing info.
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10-27-2013, 01:18 PM
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#4 |
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Registered User
Join Date: Apr 2003
Location: New Orleans area
Posts: 198
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
I pretty sure fooking is not allowed on the forum.
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10-27-2013, 01:30 PM
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#5 | |
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Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
Quote:
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10-27-2013, 03:10 PM
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#6 |
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Registered User
Join Date: Jan 2013
Location: New providence ia
Posts: 1,018
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
72 had a return line and vent going to a charcoal can the return you need to have the right fuel pump. I'm dealing with the same issue. These are just my findings so far
__________________
72 GMC super custom.
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09-08-2020, 10:13 AM
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#7 |
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Senior Member
 
Join Date: Jul 2018
Location: Bethany Connecticut
Posts: 370
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
Here you go
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09-08-2020, 06:09 PM
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#8 | |
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Registered User
Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
Quote:
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09-09-2020, 04:15 PM
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#9 |
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Registered User
Join Date: Aug 2013
Location: Calgary, Alberta
Posts: 683
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Re: Fooking for a '72 fuel tank fuel line and vent line routing diagram?
I installed EFI with my stock 72' in cab tank, and I used the return line.
 Under the truck 
__________________
1972 Cheyenne Super SWB PS, PB, Tach, A/C, Tilt. Drivetrain: Built 402BB, TCI Streetfighter 700R4, 2,500 stall, Eaton posi, 3.73. Suspension/Chassis: ECE 4.5/6.5 drop, CPP nitrogen shocks, CPP front and rear sway bar, CPP cross members. Exhaust: 3" exhaust with x-pipe, Spintech 3000 mufflers, Hooker ceramic coated headers. Best 1/4 mile time: TBD. |
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