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Joined: Oct 2006
Posts: 128
L
Wrench Fetcher
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L Offline
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Posts: 128
I'm getting ready to buy dual saddle tanks for my '65 C-10 and figured I better find out what ohm range was in my gas gauge. Can anyone tell me if a stock 1965 Gas Gauge is a 0-30 ohms or 0-90 ohms gauge?

Thanks.

Lee (hoping for a 0-90)


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1965 Chevy C-10 Gallery page
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A
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LeeA,

The '65 isn't one I am familiar with (are any), but the catalog says '63--'66 uses a stock 30 ohm sending unit.

Stuart

Joined: Oct 2006
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L
Wrench Fetcher
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That's where I'm confused. I've see catalogs that say what you said, and others that say the 0-30 is up to 1964 and the 0-90 is 1965 on up, and others that say 0-30 is up to 1964 and the 0-90 started in 1966 with nothing for 1965.

Thanks.

Lee


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1962 Shasta 16' AirFlyte Travel Trailer
1941 Case Model S tractor
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30 ohms-truck stayed 30 until 67. Brian


My \'64\'s in the Gallery
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1964 Suburban 350/700R4
1979 Ford F350 4x4 400/c6
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L
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Thanks... any way to get a 90 ohms sending unit to work with a 30 ohms gauge?

Lee


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1965 Chevy C-10 Gallery page
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1961 Studebaker Hawk
1962 Shasta 16' AirFlyte Travel Trailer
1941 Case Model S tractor
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Posts: 5,708
A
'Bolter
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LeeA,

I don't think you can mix them and have them read properly...this has plagued man since the dawn of time. smile

Stuart

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the only way to do it is duble the curint but to do that with out runing something dard ti do.

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C
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This from Classic Instruments website.

0-30 Ohms (GM Type '64 and earlier)
0-90 Ohms (GM Type '66 and later)


http://www.classicinstruments.com/index.aspx?documentID=fuelgaugesandtank

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R
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ACCORDING TO JIM RIZZO OF CLASSIC TRUCKS-MAY, 2000:
0-30 OHM PRE 58
0-90 OHM 58 AND LATER

NO WONDER US ELECTRONICALLY CHALLENGED GET CONFUSED!

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i'm not confused, i'm just stupid!

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There is an easy way to check if you wish. Disconnect the sensor wire from your gauge. Hook up a variable resistor (0-100 Ohms or greater). One wire to the sensor input on your gauge, the other to ground. Turn the key on to a position where the gas gauge would normally read. Turn the resistor until the gauge shows empty. Turn everything off, remove the hook up wires and read the resistor with an ohmmeter. You now know what your gas gauge wants.


Six volt guy living in a twelve volt world
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just a word on the ohms i have a 63 long bed and i got a new sending unit and it is 30 ohms so i think u may have the same in it niot sure but hey 2 years can niot make that diffrent

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trucks did not change to 90 ohms until 67, 65 was the yr for cars


My \'64\'s in the Gallery
Pictures in my Photobucket
1964 C10 Custom Cab 350/700R4
1964 Suburban 350/700R4
1979 Ford F350 4x4 400/c6
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To find out what you have:
1. Go to the bank and take out a loan.
2. Fill up the tank.
3. Pull the sender wire off at the tank and read the terminal
to ground resistance.

Voila! You have your answer!


Moderated by  Jon G, Rusty Rod 

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