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67-72 fuel tanks

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Old May 21, 2005 | 12:33 AM
  #1  
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Question 67-72 fuel tanks

Just got a 71'-72' F-250 Highboy. While removing the tires on the rear I noticed that its got the saddle-bag style fuel tanks under the bedsides, as does my grandma's 72 F-100, I haven't been able to find a switch to use these two tanks, where should I be looking??

Thanks,
Eric
 
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Old May 21, 2005 | 02:22 AM
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Typically, the switch would be on the floor next to the seat.
 
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Old May 21, 2005 | 05:28 AM
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How much do those side-saddle tanks hold? I've been thinking about finding one for my SWB and using it as my main tank and removing the tank from behind the seat.

-J.Banks-
 
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Old May 21, 2005 | 06:05 AM
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JD, There are several sizes, some of the later tanks hold 18 or more gals. and that is about what the behind the seat tank holds.

John
 
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Old May 21, 2005 | 01:01 PM
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> removing the tank from behind the seat.

If you are doing it for safety, keep the behind the seat tank, it is safer then a saddle tank outside of the frame. If someone crushes the cab to the point that the interior tank bursts, you are most likely dead if they hit on the driver's side and the resulting fire will not matter.

If a saddle tank bursts from a minor crash and dumps 12 gallons of gas as it explodes, you are still likely to die in the cab from the fireball if the truck is not pushed far from the accident site.
 
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Old May 21, 2005 | 07:10 PM
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Originally Posted by jowilker
JD, There are several sizes, some of the later tanks hold 18 or more gals. and that is about what the behind the seat tank holds.

John
Is that a combined number or is that per tank?
 
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Old May 21, 2005 | 08:16 PM
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extra fuel tanks

CustomErik, both of my 71s have tanks in front of the rear tires, but they are not the same shape. The ones in my 2wd are a little narrower than the ones in my 4wd, but they all seem to hold about twenty gallons per side. The ones my 2 wheeler is wearing, you can just see them peaking out from under the bed. The 4wd's extra tanks are out of sight. The narrow tanks on the 2wd have a filler door cut into the bed sides near the front of the box, and the four wheeler's doors are just in front of the wheel opening. From the looks of them, I don't think either set was factory equipment. DF, @ his Dad's house
 
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Old May 21, 2005 | 10:27 PM
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my saddle tanks are both 20 gallon units on my 71 f-250 4x4. The switch should be mechanical and metal and be located on the driver side just to the left of the seat on the raised section there.
 
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Old May 21, 2005 | 10:36 PM
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Not to steal thread but where can I get a valve or rebuild kit (don't think it's rebuildable) for a 3 tank system? I want to keep it manual not convert to electric.
Carl....=o&o>....
 
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Old May 22, 2005 | 01:27 AM
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Originally Posted by rebocardo
> removing the tank from behind the seat.

If you are doing it for safety, keep the behind the seat tank, it is safer then a saddle tank outside of the frame. If someone crushes the cab to the point that the interior tank bursts, you are most likely dead if they hit on the driver's side and the resulting fire will not matter.

If a saddle tank bursts from a minor crash and dumps 12 gallons of gas as it explodes, you are still likely to die in the cab from the fireball if the truck is not pushed far from the accident site.
Didn't realize the tanks were on the outside of the frame. How wide are they? Would they fit on the inside of the frame between it and the drive-line?

I want the added room in the cab, the smell of gas out but without having to keep my spare tire in the bed of the truck.

-J.Banks-
 
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Old May 22, 2005 | 05:46 AM
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Originally Posted by 1970Custom
Is that a combined number or is that per tank?
Per tank.

John
 
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Old May 22, 2005 | 12:26 PM
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I do not know what a 71-72 highboy is like, but, if it is anything like a 71 F-100 there is not room because of the cross member behind the cab and the way the shocks mount with the cross member over the rear axle. I measured when I had my bed off and the most I could fit with a custom tank would have been 12 gallons inside of the frame behind the cab.
 
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Old May 22, 2005 | 01:26 PM
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jd, i got a tank from a 96 ford ranger and am mounting it in my 72 and it sits inside the frame rail. i had to flip the crossmember just in front of the rear end and notch the one the e brake is mounted to on the left side of the bottom brace. the tank has a molded section that lays inside the channel of the frame. and you'll have to make your own straps then either make a line to fill to the bedside or in the bed floor like i'm doing. it actually isn't much workand i like it inside the frame better than outside.
 
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Old May 23, 2005 | 05:41 PM
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Does the pump pull from both tanks at once or does it have a valve system from side to side???

Also, would it be possible to remove the in-cab tank, and use the other two for the main system??
 
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Old Apr 3, 2015 | 11:26 PM
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Originally Posted by 4Cammer72
jd, i got a tank from a 96 ford ranger and am mounting it in my 72 and it sits inside the frame rail. i had to flip the crossmember just in front of the rear end and notch the one the e brake is mounted to on the left side of the bottom brace. the tank has a molded section that lays inside the channel of the frame. and you'll have to make your own straps then either make a line to fill to the bedside or in the bed floor like i'm doing. it actually isn't much work and i like it inside the frame better than outside.
Do you have photos? I'm working on my 64 F250, and was poking around at a salvage yard looking for a 67-72 2wd inside frame tank when I noticed the Rangers. Any issues with sender and your fuel gauge?
 
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