fuel tank capacity

[JDaniel]

Hello all,
wanted to know what the fuel tank capacity is for a c10 stepside 1980
Left tank...
right tank...
who can help ,searched the net but didn't found anything.

[zieg85]

GM had 2 sizes, 16 and 20 gallon.  Usually dual tank 1/2 ton trucks had 2-16 gallon tanks

[1979C20]

Long bed or short bed?

[Irish_Alley]

only ways to tell if you A. measure the tanks 16 gal would be about 42" 20 gal would be about 50" long. or B. empty her at home add 5 gal then drive to the gas station and fill her up. most long beds did come with 20 but there were a few that had 16 and i think all short beds came with 16s. idk but did they make a dual tank short bed?

[JDaniel]

my truck is a shortbed stepside with dual tanks, the left one is i think 16 gallon ,but i thought the right one ( passenger side )was bigger. will measure them both then. thx for the help.

[1979C20]

The tanks are the same on either side of the trucks. And shortbeds cant fit the 20 gallon tanks.

[Captkaos]

Longbeds could have either 20 or 16 on the same truck but one is always a 20.  Short beds can ONLY have 16.