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Long-Range Fuel Tanks

I was also thinking a Suburban owner could put a fuel tank from a Tahoe on. I wonder if it would just bolt on?

Here are a couple pic's of the special fittings.

fuel line fittings 001.jpg

fuel line fittings 002.jpg

fuel line fittings 003.jpg

fuel line fittings 004.jpg
 
94K30 said:
standard cab/ long bed it is 34 gal (US), ext cab, I believe is 26
Click to expand...

Has anyone tried to replace their 26 with the 34? Is it just a bolt in? Is it worth the effort?

I'd like a bit more distance between fills. I've been thinking of dropping the tank to adjust the float on the sender: it reads full for a long time, then drops like a rock. Cleaning the sock couldn't hurt either.

If a 34 gal tank fits, then I'd rather expend the effort and put a larger tank in.

Cheers.
Mike
 
snoman699 said:
Has anyone tried to replace their 26 with the 34? Is it just a bolt in? Is it worth the effort?

I'd like a bit more distance between fills. I've been thinking of dropping the tank to adjust the float on the sender: it reads full for a long time, then drops like a rock. Cleaning the sock couldn't hurt either.

If a 34 gal tank fits, then I'd rather expend the effort and put a larger tank in.

Cheers.
Mike
Click to expand...

34 won't fit a short bed.
I think its the nature of these trucks that the fuel guage read full and then drops really fast to "E" at about the 1/2 full mark. I think it has alittle to do with the shape of the tank (think of a cone shape).
 
i think it has more to do with how far down in the tank the float sets there is prolly a good 4 or 5 in. IIRC from the top of the tank to where float is at when full
 
FWIW my truck has factory 2 tanks, front one a 22 gallon about 60" long and 15" wide. And a rear tank, I believe is the 24, its square and behind rear axle.

So all plumbing parts and transfer methods from aux tank to primary tanks have GM part #'s. GM simply used an identical lift pump to pump into main tank from rear.

Not sure what turns it on and off to avoid over filling the main (front) tank.

If anyone knows please let me know.
 
I measure my Suburban tank in 5Th's It takes 40L (10 or so gallons) from the full line until the tank is full and the needle stops moving. Then between half and 3/4 is Half a tank.
 
Burning oil said:
34 won't fit a short bed.
I think its the nature of these trucks that the fuel guage read full and then drops really fast to "E" at about the 1/2 full mark. I think it has alittle to do with the shape of the tank (think of a cone shape).
Click to expand...

Nuts! I guess then my options are to install an extra tank in the bed or, as others are considering, to put a burb tank where the spare is now.

Thanks for saving me the time to r&r the tank to fix the sender. Good to know that the behaviour of my gauge is "normal".

Mike
 
Is there still enough room to put in one of the old sidesaddle tanks? they were 22 gallons a shot. and yes every GM 'truck' I've had has had the screwed up float position. It only looks bad when you hit the E:sad:
 
I think even an extended cab short bed could come with 34 gallon tank. We had this discussion a while back, and it seemed that it was cab dependent not bed length.

I'm very happy with my 50 gallon bed tank and 34 gallon main tank, range of 1500-1800 miles on highway, hope it improves to 2000 when I get around to buying an ATT.
 
buddy said:
I think even an extended cab short bed could come with 34 gallon tank. We had this discussion a while back, and it seemed that it was cab dependent not bed length.

.
Click to expand...

It is bed length that determines the tank size. Any longer and it will hit the rear axle. The 34 gallon tanks are longer from where they bump up behind the rear of the tank.
 
Joey D said:
It is bed length that determines the tank size. Any longer and it will hit the rear axle. The 34 gallon tanks are longer from where they bump up behind the rear of the tank.
Click to expand...

I know that the manual says that, but I've seen several people say they have a 6.5 or gasser extended cab short bed with 34 gallon tank. So I think it will fit, and may have been a factory option. They had said the tank goes under the cab some. Might be good to do a poll or thread asking people that.
 
yes the 34g tank does go under the cab some. the rear of the tank stops about 6 or 8 inches from the axle so the "new" plastic tanks are a different shape then the older steel tanks
 
I know my setup wouldnt be for everyone, but, FWIW> I used a 22 gallon tank from a '67-72 vintage truck with the in cab tank. I eliminated the rear seat from my cab, as I use that rear section to carry my tools, etc. The old tank fits like a glove against the rear wall of the newer cab. I put a cheap electric pump, mounted to the bottom of the cab, and plumbed the line into the center of the overflow vent on the main tank fill tube.

Going down the hiway, when I get close to empty, I flip the toggle switch at the bottom of the driver seat, and watch the needle rise. Generally takes about ten minutes to transfer the fuel to the main tank.

Back in June, I ran from central N. Carolina, down I 95 all the way home to Ft Myers without stopping for fuel.
 
It's part #6954. It's been under my truck since about 3 months after it was driven off the lot, and has been a quality piece. What do you want to know?
 
Rhinopkc said:
It's part #6954. It's been under my truck since about 3 months after it was driven off the lot, and has been a quality piece. What do you want to know?
Click to expand...


Nothing more now that I have the part number. I will go to their web site and see what I can do about getting one. The extra fuel would be beneficial for me and what I use my truck for.
 
You may have to call them, I don't see it on their website anymore. They build custom tanks, and I'm sure they still have the specs for this one, so it shouldn't be too hard to call them and order one if they don't still stock it. My truck is long bed extended cab, so I hope yours is at least that long.
 
Well, since I'll probably be bugging you for help on a turbo soon, I thought it only fair I crawl under my truck and get the whole part #010-01-6945. The build plate that is easy to see just had the last 4 on it. Hope that helps. Oh, and it's 46 gallons, I've been cheating myself out of a gallon.
 
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