The Stovebolt Site Forums The Parking Lot '60-'66 Trucks How can I find out gas tank size?

I bought a 75 Blazer gas tank that one day will be installed under the bed of my 64 C10.

What I don't know is how to tell what size in gallons the tank is so I can but the correct sending unit for it?

Is there a number somewher on the tank or how do you find this information?

thanks once again,

Scott

Here are some ideas.

Try logging onto a Balzer forum and ask if anyone knows.

Call a dealership and ask.

This might not be practical, but it will work. Weigh the tank while it's empty.
Fill it with water WHILE it is still on the scale. Calculate the weight of the water and then divide by how much a gallon weighs. I hope that doesn't sound silly. It should work. Or pour out the water into a measuring device.

Calcualtion with length, width, height will be less accurate but might be close enough for your purposes.

I wanna see what others say.

Measure the size, post the dimensions here, we will tell you what the approximate capacity is. Or simply use this formula: Multiply Length (inches) x Height (inches) X Width (inches) X .0043 = capacity in gallons.

That being said, every aftermarket Fuel Tank Sending Unit I have ever purchased is adjustable to compensate for tank height. You trim it to length.

Specifications
coloradok5.com/specs.shtmlCached - Similar
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Jump to 1975‎: 1975, Production Total: 50548. Base Price: 4998, Weight: 4313. Wheel Base: 106.5 in. Fuel Tank Capacity: 20-gallon/31-gallon ...

Try Google. It's amazing. Really. You just type in what it is that you want to know, and then, here we go..........read! That's all there is to it.

Unfortunately, the real question to be determined in finding a proper sender is what Ohms will be necessary with your guage. There are several universal sender kits on the market for both 6 and 12 volt systems, but tank capacity, as was stated earlier, has nothing to do with which sender to buy.

Fill it up with water, one gallon at a time, with a discarded plastic milk jug. Add them up, to be sure on the actual volumne.

Looking at the aftermarket tanks, there are 2 different dimensions mentioned and the outer dimensions match the tank I have exactly.

Where I have a difference is in the depth of the tank. One is listed at 10 inches and one at 14 inches. The tank I have is 11.5 inches measuring where the sending unit would go.

I did "google" it and did not find what I was looking for and that's why I asked here.

You would be amazed at how inaccurate some information from google is, really you would. It isn't that simple.

The sending unit is listed as 0-90 ohms I will match a new gauge to the sending unit.

But thanks for the help.

one cubic foot of any tank = 6.3 imperial gallons or 7.4 US gallons

Bill

In the amount of time you are spending doing searches, that don't match your tank specifications, you can fill it one gallon at a time and know exactly what the capacity is.