Fuel sending unit question
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Junior User
Joined: Dec 2012
Posts: 97
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From: Farmington B.C. Canada
Fuel sending unit question
Hello again now I have a fuel question does anybody know where to find a fuel sending unit for my 1978 f150 sb rear tank that has a 3/8 inch output instead of 5/16. I was told since im going with 400 horse motor I need to get more fuel to the motor or ill run out when I floor it.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,150
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From: S/W Missouri, Polk county
Who told you that bit iof information? I have never heard that before.
Have you called your local part stores and asked if they have different output hose size sending units?
MTS COMPANY, L.C. - Ford Pickup fuel tanks
1973-79 Ford Pickup Truck Fuel Tank
Have you called your local part stores and asked if they have different output hose size sending units?
MTS COMPANY, L.C. - Ford Pickup fuel tanks
1973-79 Ford Pickup Truck Fuel Tank
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
The OEM sending unit is supposed to be 3/8 inch in the first place. Any sending unit you find with a 5/16-inch outlet is a reproduction error. Dorman sending units suffer from such an error. The sending unit I got from DC had the correct outlet size.
Thread Starter
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Junior User
Joined: Dec 2012
Posts: 97
Likes: 0
From: Farmington B.C. Canada
Who told you that bit iof information? I have never heard that before.
Have you called your local part stores and asked if they have different output hose size sending units?
MTS COMPANY, L.C. - Ford Pickup fuel tanks
1973-79 Ford Pickup Truck Fuel Tank
Have you called your local part stores and asked if they have different output hose size sending units?
MTS COMPANY, L.C. - Ford Pickup fuel tanks
1973-79 Ford Pickup Truck Fuel Tank
The guy at the parts store told me. Small town what can I say. The only sending unit he could get was 5/16 unless I get one for a mustang there 3/8 but nobody knows if it will work with the tank I have. May be I will have to talk to the local ford dealership and get one directly from them. I will also try and google dc and see if I can find one as well. Ok what does dc stand for. And also if it matters im using a 19 gallon rear tank its a 1978 f150 shortbox 2wd.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
These aren't hard to find at all. Assuming you have the standard 19-gallon tank, this is the sending unit you need:
Fuel Tank Sending Unit w/ Aft Steel | Dennis Carpenter Ford Restoration Parts
I also recommend upgrading the float:
Fuel Tank Sending Unit Float | Dennis Carpenter Ford Restoration Parts
As I said before, the OEM sending unit is supposed to be 3/8". Forget all this nonsense about some "specialty" size that you were supposedly told about. You can surely find a sending unit cheaper through Rock Auto or just about any parts store, but as I mentioned, you run the risk of it being 5/16" (which, again, is wrong).
Fuel Tank Sending Unit w/ Aft Steel | Dennis Carpenter Ford Restoration Parts
I also recommend upgrading the float:
Fuel Tank Sending Unit Float | Dennis Carpenter Ford Restoration Parts
As I said before, the OEM sending unit is supposed to be 3/8". Forget all this nonsense about some "specialty" size that you were supposedly told about. You can surely find a sending unit cheaper through Rock Auto or just about any parts store, but as I mentioned, you run the risk of it being 5/16" (which, again, is wrong).
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Junior User
Joined: Dec 2012
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From: Farmington B.C. Canada
Thanks fmc400 I took the one I bought from local parts store back and ordered one with float from DC.
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Joined: Jan 2010
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From: Riverside, CA
I bought the Spectra sender (on the right) along with a new 19 gallon tank and realized the hose outlet on the sending unit was the wrong size when I got it home.
I ordered the correct sender with a 3/8 outlet from Jeff's Bronco Graveyard (on the left) and it is better quality all the way around.
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I ordered the correct sender with a 3/8 outlet from Jeff's Bronco Graveyard (on the left) and it is better quality all the way around.
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