I been searching for a bit on ohms on the oem units and the availble ones from autometer. I am running to a few issues with ohms compatibility.

So on multiple threads searched I came up with 75.9 ohm full and 7.4 empty then I found 81.2ohm full and 5.5 empty.

I no longer have a oem gauge cluster nor I run oem gauges. I NEED to install an Autometer level gauge and came up with a close one autometer 3314 is 90ohms to 0ohms

My question is if I ran this Autometer gauge how close do you guys think it will be. It's really close. Full doesn't concern me . The empty part does. I never run my car less than 1/4 tank at the track . But I want to make sure that at 1/4 tank I am at 4-5 gallons of fuel than 1 to 2 gallons at 0 ohms.

I hope some of you understand what I tried to explain .

 

i'm thinking that you can buy the sending unit specific to whatever gauge you want to run that way you're not going to run into compatibility issues. IE, you can get a different fuel level sending unit that would supply the ohms need to have the gauge read accurately.

I went on summit racing and found that you can get a package deal for both the sending unit and the gauge.

 

Has anyone properly taken measurements of the FD's fuel level sender at empty and at full?

Is it 75.9 ohm full and 7.4 empty or 81.2ohm full and 5.5 empty?

 

Nevermind, found what is supposed to be the correct values.

7.4 ohms full, 75.9 ohms empty.

The 5.5 / 81.2 ohms reading is probably from variance in either the readings or the aging of the fuel sender itself.