Which fuel sending unit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bob8619 · 01-30-2018, 06:59 PM

Can you use a 2 or 3 port fuel sending unit to replace a 1 port and just put rubber caps on the unused ports or is that a bad idea? Are they engine specific or just advancements in technology that they put into later models?

geezer#99 · 01-30-2018, 07:52 PM

Are you talking fuel tank sending unit or are you talking fuel pump?

bob8619 · 01-30-2018, 07:58 PM

Quote:

Originally Posted by geezer#99

Are you talking fuel tank sending unit or are you talking fuel pump?

Sorry, the fuel tank sending unit. The auto parts store carries the 2 or 3 port (for lack of a better word) but its saying it won't fit my vehicle since apparently the 68 used the one port , as in just the fuel line to the carb, no return or vent.

Mines been tampered with

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geezer#99 · 01-30-2018, 08:40 PM

So does it physically not fit (larger or smaller) or just not the same.
You might need to rebuild yours.

**LockDoc** · 01-30-2018, 08:52 PM

Quote:

Originally Posted by bob8619

Sorry, the fuel tank sending unit. The auto parts store carries the 2 or 3 port (for lack of a better word) but its saying it won't fit my vehicle since apparently the 68 used the one port , as in just the fuel line to the carb, no return or vent.

Mines been tampered with

Attachment 1745971

It looks like it has been tampered with....

As long as the fitting for the fuel line connection is the same it will work fine. Just cap off the vent and return outlets and run a vented gas cap. Make sure the replacement has the filter sock on the end of the pickup tube. I don't know what that monstrosity is on the end of yours. Be sure and check the capped off outlets once in a while to make sure the caps haven't deteriorated......

LockDoc

**71CHEVYSHORTBED402** · 01-31-2018, 02:21 AM

Personally, I'd hold off for the right one. Single line is available, for a 71 tank anyway. Seems they'd mount the same on 67-72 cab tanks, but can't swear to it. I got one through Classic Heartbeat.

01-30-2018, 06:59 PM	#1
bob8619 Registered User Join Date: Jan 2014 Location: Ft Myers Florida Posts: 571	Which fuel sending unit? Can you use a 2 or 3 port fuel sending unit to replace a 1 port and just put rubber caps on the unused ports or is that a bad idea? Are they engine specific or just advancements in technology that they put into later models? __________________ 1968 C10

01-30-2018, 07:52 PM	#2
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,512	Re: Which fuel sending unit? Are you talking fuel tank sending unit or are you talking fuel pump?

01-30-2018, 08:40 PM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,512	Re: Which fuel sending unit? So does it physically not fit (larger or smaller) or just not the same. You might need to rebuild yours.

01-31-2018, 02:21 AM	#6
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,118	Re: Which fuel sending unit? Personally, I'd hold off for the right one. Single line is available, for a 71 tank anyway. Seems they'd mount the same on 67-72 cab tanks, but can't swear to it. I got one through Classic Heartbeat. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s of OEM identifications and part numbers, all written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025



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