Lawhead

iTrader: (14)

At the gas pump the other day I put 16.8 gallons in my car.
Looked up that these cars only have a lil over a 15 gallon tank. and when I put the almost 17 gallons in there was still gas in the tank.........WTF?!

Anyone know if there was an upgraded option for a bigger tank and such??

henry172

iTrader: (2)

Maybe the pump was off.

litch2004

iTrader: (1)

Yup sounds like you got screwed by the gas station.

wrd1972

iTrader: (12)

Agreed the pump is off. Go to another station next time.

LSWHO

iTrader: (1)

shoulda called em on it on the spot and gotten money back.

Lawhead

iTrader: (14)

Well going to go fill the tank right now its at full and with about 100 something miles on the trip see how much gas I get in it.

Lawhead

iTrader: (14)

wow think my Trip meter has to be WAYY of with the change of the gears

at 123 miles
put 3.984 gallons in the car and it clicked
meaning the LT1 with 3.73s got 30 MPG


something is way out of wack here

litch2004

iTrader: (1)

the bad thing about the f-body gas tanks is the design. It will stay about full forever. I remember when mine was stock and i got about 260 miles to a tank. about 180 of that was when the needle was still above full. So it could be both the gears and the design.

Jake_the_Snake

iTrader: (5)

wtf lol. im lucky if i get 220 to the tank, and ive got 2.73s!

litch2004

iTrader: (1)

That what i always got. I normally only had to put in around 10-10.5 gallons in at a time.i onlt drove highway miles though. The only thing that was done to the car was a factory set of 3.42s were installed by the previous owner and a k&n filter in the factory box. So on average i used to get 24-26 miles per gallon. Oh and i had my trans rebuilt at around 180xxx miles. So it was still doing pretty good being that old.

z_speedfreak

iTrader: (3)

sounds like the pump is off, but your mileage doesn't seem off. best mileage I've ever got was 500miles out of 1 tank.

Icematrix69

LOL, you must have coasted downhill with the engine off for the last 240 miles!!

litch2004

iTrader: (1)

^^x2 I was about to say that too. I know you have a t56 and all but the best I have ever seen was out of my buddies 02 WS6 and his was 29mpg straight highway. With what your saying at 500 miles @ 15 gallons you got 33.33mpg.

mguidry629

iTrader: (6)

So when I go to the pump and put in 14.5 gallons, I only have 1/2 a gallon left in the tank?

I'm pretty sure I've put over 16 gallons in my tank before. One of the first times I filled up, before I realized how the guage worked.

I go about 210-220 miles before I fill up which equates to about 15 mpg.

Icematrix69

At 14.5 gallons you should have about 1 gallon left plus what ever you put into your filler tube at your last fill up.

Wicked94Z

iTrader: (26)

i filled up with 17 gallons the other day, but i don't have anything in the stock tank, and i have probably a half gallon extra volume in just fuel lines.

Icematrix69

I do know when but sometime around 97-98 they increased the fuel capacity to 16.8 gallons so that may be why you where able to get in 17...

Travis Johnson

iTrader: (2)

If you're worried about the pump being miscalibrated, look for the local auditor inspection sticker. If it's not up to date, call them on it.

DAVE00

iTrader: (10)

It's not the tank design it's the poor float design for the fuel level sender. This is a very common problem in fbodies as they get older and you will notice that your tank will stay full (guage reading) until the last 50 miles and then you can pratically watch the needle go to the E.

Sublime Dak

Despite it being listed as a 16 gallon tank, they usually hold about a gallon more than specified. Pretty common.