Gas Filler - The 1947 - Present Chevrolet & GMC Truck Message Board Network

etindoll · 03-25-2013, 09:47 AM

I have been kicking the idea around in my head on using the existing fuel filler that is in the cab of my 68 GMC, but piping it from there to a under bed blazer tank. Do you guys know of anyone that has done this or if you think there would be any issues doing this? I was thinking that I could exit out of the back of the cab just below the bed floor and try to keep the pipe at a negative angle pitching back to the tank filler.

54belair · 03-25-2013, 09:54 AM

You'll have to overcome frame/cab flexing. On a long bed Ive seen as much as an inch or more of twisting/flexing. If your truck is always on a flat surface it wouldnt be an issue.

**Ol Blue K20** · 03-25-2013, 11:30 AM

Quote:

Originally Posted by 54belair

You'll have to overcome frame/cab flexing. On a long bed Ive seen as much as an inch or more of twisting/flexing. If your truck is always on a flat surface it wouldnt be an issue.

A few rubber hose connections should overcome the flex issue

etindoll · 03-25-2013, 11:47 AM

Quote:

Originally Posted by Ol Blue K20

A few rubber hose connections should overcome the flex issue

That is what I was thinking maybe use ridgid pipe to get outside the cab and then a rubber connection to the pipe that runs along the frame and then another rubber section to crossover to the tank. I was thinking of using stainless tubing for the section that runs along the frame. Just not sure what diameter would be best.

**truckster** · 03-25-2013, 11:49 AM

I can see two possible issues. The first is venting; that's a long run for the fuel to make with very little slope to allow the air to slip past the incoming fuel. I think that might be an issue.

The second is just the length of the fuel filler and the related chance that something would hit it or cause it to leak.

SS Tim · 03-25-2013, 03:03 PM

My IHC pickup does a similar (much shorter) run except it has the pillar filler that exits the cab to a saddle tank from the factory.
You are not the first to ask this question here.
My question is why would you go to the trouble of relocating the tank and keep the filler in the cab?
If you must relocate the tank, duplicate the blazer/suburban installation as much as possible including the vent.
There was also a rear aux tank option RPO N18 for pickups. These installations are in the assembly manual.

cdowns · 03-25-2013, 03:31 PM

sounds like it wood b an easy foolproof fuse to do a pinto type bomb

03-25-2013, 09:47 AM	#1
etindoll Registered User Join Date: Sep 2012 Location: Booneville, MS Posts: 114	Gas Filler I have been kicking the idea around in my head on using the existing fuel filler that is in the cab of my 68 GMC, but piping it from there to a under bed blazer tank. Do you guys know of anyone that has done this or if you think there would be any issues doing this? I was thinking that I could exit out of the back of the cab just below the bed floor and try to keep the pipe at a negative angle pitching back to the tank filler.

03-25-2013, 09:54 AM	#2
54belair Registered User Join Date: Mar 2011 Location: bolivar, mo Posts: 839	Re: Gas Filler You'll have to overcome frame/cab flexing. On a long bed Ive seen as much as an inch or more of twisting/flexing. If your truck is always on a flat surface it wouldnt be an issue. __________________ 1997 shortie stepside 1968 short stepside 1966 mustang 1966 chevelle ss Dont always go the cheapest route--You can save yourself into the poorhouse! My Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=489030

03-25-2013, 11:49 AM	#5
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,869	Re: Gas Filler I can see two possible issues. The first is venting; that's a long run for the fuel to make with very little slope to allow the air to slip past the incoming fuel. I think that might be an issue. The second is just the length of the fuel filler and the related chance that something would hit it or cause it to leak.

03-25-2013, 03:03 PM	#6
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: Gas Filler My IHC pickup does a similar (much shorter) run except it has the pillar filler that exits the cab to a saddle tank from the factory. You are not the first to ask this question here. My question is why would you go to the trouble of relocating the tank and keep the filler in the cab? If you must relocate the tank, duplicate the blazer/suburban installation as much as possible including the vent. There was also a rear aux tank option RPO N18 for pickups. These installations are in the assembly manual. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

03-25-2013, 03:31 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Gas Filler sounds like it wood b an easy foolproof fuse to do a pinto type bomb __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY



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