Not sure where to post this. If one of the moderators thinks it belongs in a better place, then by all means put it there ! I hope it may help others with this problem.
I have to take a long drive this summer to Colorado with my lifted, big tire 1984 Ramcharger. I have to do some of the drive through the hot desert, so I wanted to do that in the AM. That means I have to depart Tucson at midnight. I will be on some of Arizona's smaller state highways. First thing I thought of was where the heck am I going to find gas in these small towns at 3 AM ? so I was concerned about the size of the gas tank.
I am one who does not let the gas gauge drop below 1/4. At that level, I am putting about 22 gallons in to fill it up. Because of that, I thought I might have a 24 gallon tank, which is not big enough. So, I looked into the sizes available. The 1984 factory repair manual list all Ramcharger / Trailduster as having a 35 gallon gas tank. That's it. No options.
I thought to myself, NO WAY ! At 1/4 tank I am only putting in about 22 gallons to fill it up. I then started to search on this site about gas tank size. Lots of opinions and some good facts. So, I decided I need to find out for sure !
A buddy had a Holley Blue electric fuel pump with some fuel hose and wires on it that we hooked up to jumper cables and used to suck the gas out of my tank, which I previously drove until it showed 1/4 left. Remember, at that level, it took about 22 gallons to top it off. We took 12 gallons out, when the pump started to suck air. 12 + 22 = 34 ! I started the Ramcharger up and drove it down the block. Around the block. I even mashed the accelerator pedal to the floor for a block and it did not run out of gas on me. Problem solved. I GOT A 35 GALLON GAS TANK ! Happy guy ! At about 12 MPG I can now go as far as 420 miles. That is a heck of a lot better than 288 miles with what I thought was a 24 gallon gas tank !
Here are some useful details:
My gas tank is plastic, which was indicated on this site that I would have a 35 gallon gas tank.
My gas tank is more than 12 inches in height, again info found on this site, indicating the above.
The gas gauge needle is past the empty line and just touching the "E," with about 1 gallon left.
I would suggest you figure your milage out and just track it by using your odometer. I seem to get a constant 12 MPG in town, or on the highway.
Steve in Tucson