Fuel Sending Unit

Nickeleye · COURTICE, ONT

Fuel Sending Unit

poncho62 · ADMINISTRATOR

Looks Chevyish.....Original tank was in the cab of a 53 Ford/Merc, was it not?

Torquewar · DORCHESTER, ONT

yup GM unit dont know the year but looks like 70s to early 80s.....

dualquadpete · BLACKSTOCK, ONT

That's not the stock gage float!!!! Original, was held on the top of tank with about 6 machine screws, & no fuel lines on sender!!! Looks def. GM with the retainer twist ring!!!

Nickeleye · COURTICE, ONT

poncho62 wrote:
Looks Chevyish.....Original tank was in the cab of a 53 Ford/Merc, was it not?

I could be wrong but I thought prenvious generation to 53-55 had tanks in the cab?

Nickeleye · COURTICE, ONT

Thanks guys

poncho62 · ADMINISTRATOR

Nickeleye wrote:
poncho62 wrote:
Looks Chevyish.....Original tank was in the cab of a 53 Ford/Merc, was it not?
I could be wrong but I thought previous generation to 53-55 had tanks in the cab?

I googled 53 F100....got this pic...tank is in cab, filler is behind door...I believe it was in cab right up until 1968 or so.

Nickeleye · COURTICE, ONT

My filler neck is in the same spot. But my fuel tank is like the one in this pic here I just found.

147843.520.390

IR Mechanik · INGERSOLL, ONT

Pretty sure you're right that GM is low resistance on empty. My 68 would go past full when the wire came off the sender and go empty when you grounded the wire. We put a GM tank in my friend's mid '80s ford plow truck and the gauge read backwards. Don't think it was accurate, the resistances may be different but it was backwards.

slim · DUNDAS, ONT

53 to 55 are outside rail mount, before and after are in cab....... Sender Ohms

Ford up to 1986 - 73-10 Ohms
Ford 1987 & up - 16-158 Ohms
GM up to 1964 - 0-30 Ohms
GM 1965-1997 - 0-90 Ohms
GM 1998 & up - 40-250 Ohms
Mopar up to 1986 - 73-10 Ohms
AMC 1950-1977 - 73-10 Ohms
Autometer -240-33 Ohms is the most common however other ohm ranges are made
Classic Instruments - 240-33 Ohms (excluding vehicle specific gauge kits which use factory ohm range)
Dolphin - 0-90 Ohms
Dakota Digital - Programmable to work with most Ohm range senders
VDO - 10-180 Ohms

empty to full so chev would be 0 empty 30 full up to 64

147843.520.390

Nickeleye · COURTICE, ONT

Thanks Slim. I confirmed I have 0-90 empty-full.

427CARL · CLINTON, ONT

slim · DUNDAS, ONT

No problem nick just posted it in case anyone else wanted to know. The in cab tank fill, will always be higher then whats on your truck . Easy way to tell if its inside or under

Gwillyville Kid · BRADFORD, ONT

Just a little more info. There are 3 types of fuel sending units wiring programs; Ford, G.M. and Stewart Warner.

the Kid

Nickeleye · COURTICE, ONT

Thanks, I ended up going with the dakota digital drop in dash for my truck (not the digital screen, the analog needles) It's completely programmable and has a preset already for the gm90 sender!