Easy, wait until its empty, and then see how much it takes to fill it to 'full'
That depends on how much gas is in the tank and what the angle is.
No it will not. Now it will bolt right in there but the transmission will not work and the fuel pump in the fuel tank has to much fuel pressure for a carburetor
check for a damaged fuel tank
Inside the fuel tank. For access, you must either remove the boxbed or the tank. Either method is a chore and in my experience, both are about the same amount of work.
The fuel gauge gets a reading from the fuel level sender in your fuel tank. There is a float attached to a lever floating on the fuel. The lever moves ( as the fuel is depleted or refilled) along a variable resistor in the sending unit. The guage detects the variance in resistance, telling you how much fuel is in the tank.
The fuel tank pressure sensor is for the EVAP system. It has nothing to do with the fuel gauge sending unit.
The most likely problem is with the sending unit. The fuel sending unit is mounted inside of the gas tank, and sends a signal to the fuel gauge showing how much gas is left in the tank.
It sounds like you have a bad fuel sending unit. It is located in the fuel tank and the tank must be removed to replace it.
Bad sending unit in the fuel tank.
A faulty fuel gauge sending unit located inside the fuel tank would be the most common reason
okey you have two fuel tanks the between frame is like 15 gallons and the side rail is 25 ish gallons. There is a swith in the cab that selects front or rear the rear is your smaller tank. When the ttank is selected it tell the fuel guage how much fuel is in it. There is a electric valve in the framrail that has two fuel inlets and two fuel returns(one set per tank) then it has one set going to the engine. So whatever fuel tank is selected is which tank the engine pulls fuel from and returnes excess fuel to until you select your second tank. Hope this helped.
It is a means for fuel storage. Simply put it keeps fuel clean and contained to be used in the future.