Converting from dual saddle tanks to a single fuel tank

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WranglerTJForum

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I've decided I would like to remove the dual saddle fuel tanks and go with a single fuel tank under the bed of my 1973 K10 short bed pickup.

I'm curious to hear from those who have done this, what is the biggest tank that you found will fit with the least amount of modifications?
 
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75gmck25

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I’ve never looked at a short bed, so how much space do you have back behind the axle where a long bed mounts the spare tire? On a long bed you can mount a single tank in fhe spare tire area, using a Suburban tank.

I think were 3 tank sizes on the Suburban, but I’m not sure the large 40 gallon would fit on a pickup. LMC sells the OEM 25 gallon tank, and also has a complete aftermarket tank kit with an 18 gallon tank. The frame rails on a Suburban are a little longer than a pickup, so I assume there is a little more space behind the axle.
 

75gmck25

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Duplicate
 

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Blazers take the 31? Gallon size. As I recall from 30 years ago ish.
I’d think that would fit under a short bed.
 

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What year and vehicle is this tank originally for? and gallon capacity?...Pic from link
newgastank-jpg.44240
 

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Okay, how about this then, does anyone know the dimensions of the various different tanks that came in the Suburban and Blazer models? I'd like to get some dimensions so I can see what will best fit in my location.
 

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Okay, how about this then, does anyone know the dimensions of the various different tanks that came in the Suburban and Blazer models? I'd like to get some dimensions so I can see what will best fit in my location.
Use the internet. It told me in 1.367 seconds. Easier for you to google than me to copy and paste on my phone.
 

Grit dog

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Aww what the heck…
A 1978 K5 Blazer typically has a 31-gallon fuel tank with approximate dimensions of 28-3/4" x 28-1/8" x 12-3/4" for steel-bodied tanks or 28" x 28" x 13" for some plastic tanks, though exact dimensions can vary depending on the tank material and whether it is an original or aftermarket unit.

The forum made me wait 15 seconds between responses. Had 11 sec left when I tried to post it! Cheers.
 

Ricko1966

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Took me less than a minute
 

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bucket

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Searching Google will often turn up a bunch of incorrect results though too. We are here to help, not just say to search on the internet. I'd like to think that many of us here often have better and more correct answers than what might be found elsewhere.

Now with all that said, there were 25, 31 and 40 gallon tanks. 25 and 31 were used in the K5, they share a footprint, but the 31 gal tank is a bit deeper. Burbs got the 31 or 40 gal. The 40 gal tank is longer and not at all a good fit for a shortbed pickup.

There are different ways to do the swap. Custom brackets can be made, simple or elaborate. Also brackets from a donor K5 frame can be used.
 

Ricko1966

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Searching Google will often turn up a bunch of incorrect results though too. We are here to help, not just say to search on the internet. I'd like to think that many of us here often have better and more correct answers than what might be found elsewhere.

Now with all that said, there were 25, 31 and 40 gallon tanks. 25 and 31 were used in the K5, they share a footprint, but the 31 gal tank is a bit deeper. Burbs got the 31 or 40 gal. The 40 gal tank is longer and not at all a good fit for a shortbed pickup.

There are different ways to do the swap. Custom brackets can be made, simple or elaborate. Also brackets from a donor K5 frame can be used.
Good point of view, it's just getting to be so common that everyone, especially newbs just post looking for info without trying at all on their own to find anything,through our search engine or anywhere.
 

Grit dog

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Searching Google will often turn up a bunch of incorrect results though too. We are here to help, not just say to search on the internet. I'd like to think that many of us here often have better and more correct answers than what might be found elsewhere.

Now with all that said, there were 25, 31 and 40 gallon tanks. 25 and 31 were used in the K5, they share a footprint, but the 31 gal tank is a bit deeper. Burbs got the 31 or 40 gal. The 40 gal tank is longer and not at all a good fit for a shortbed pickup.

There are different ways to do the swap. Custom brackets can be made, simple or elaborate. Also brackets from a donor K5 frame can be used.
Lol, really? Just like asking someone for the answer without doing your own homework will turn up incorrect results, except you won’t know because you don’t have enough motivation to verify.
Same thing.
Plus, the new AI chats that pop up the instant answer are generally accurate, depends how specific or general of a question or how well you ask it. And then there’s the “old fashioned” internet…. Lol
Look up the part for sale at _____ company. Or, search a forum like this for the info rather than asking someone else to.
This isn’t like asking for help on fixing something you’re stumped on. This is like asking someone to order your McDonalds for you at the drive thru so young don’t have to read the menu, talk, or use the app.

Bad enough that kids (like mine, yours and everyone’s) struggle with self generated problem solving skills. Worse that full blown adults have also succumbed to this.

I also noticed that you didn’t give him the dimensions @bucket. Why not?
 

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