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what size tank ?

riflerk20

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whats a good way, besides filling it up, to determine what size gas tank i have in my 87 k5? i need to replace the sending unit. thanks
 
RPO code from the sticker in the glove box. Is your sticker still there and readable?
 
i think you can go by shape too, different sizes are easy to tell by there shape i think...ive seen a thread on here somewhere...
 
Info from Stomper:

* Capacity: 31 Gallons/118 Liters
* Dimensions: 28-3/4 X 28-1/8 X 12-3/4 inches
* Small filler pipe - 1-1/4 inches inside diameter
* Depth of bottom half - 5-1/2 inches

* Capacity: 25 Gallons/95 Liters
* Dimensions: 28-3/4 X 28-1/8 X 10-3/4 inches
* Large filler pipe - 1-5/8 inches inside diameter
* Depth of bottom half - 3-1/2 inches
 
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Absolute easiest way is if you have a stock tank skid plate.

If the tank nearly touches the skidplate (as in so close you can't see daylight through it), it's a 31 gallon. If there is a ~2" gap between tank and skidplate, it's the 25 gallon one.

The 25's are quite uncommon though, particularly later, and on gas rigs. Why do you have to replace the sender?
 
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measurements, shape, and rpo all say its a 31 gal tank. great info and thanks for the help
 

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