Fuel Tank Capacity

[Gonzalo_3]

I'm happy to report the state of my LS swap is doing alright, however I figured before I buy a EFI ready tank, might as well double check my capacity. My truck is a 1977 C10, Silverado, Big 10, and had a 350 powering it with only one tank on the passenger side. Last time I measured the tank, I measured around 50 inches long and 10 inches tall. My theory is its a 20 gallon tank but I could just be wrong and lazy lol. Lmk if my dimensions check out as a 20 gallon or a 16. My reasoning behind a 20 gallon is its just one tank. (sorry if I posted something LS related on a Carb board but I figured fuel tanks are a broad range). Thanks

 

[legopnuematic]

1973-1980 pickups:
Longbed=20 gallons
Shortbed=16 gallons
Does not matter if single or dual tanks.

Things changed some on the 80s, but that isn't relevant for your truck.

 

[Gonzalo_3]

Much obliged bro!