Installing Fuel Sending Unit
Race Director
Joined: Mar 2002
Posts: 13,646
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From: NorCal
Car Shop of Orange County (1.800.235.2470) carries a sending unit made by Fargo Automotive. Good quality (the electrical connectors are screwed down vs pressed in) and very accurate. I've used one in my 66 and very happy with it. Just make sure the nuts holding the electrical connectors are tight. Otherwise u could have a leak. Don't ask me how I know....(I was able to tighten them in place and all is good!)
1. Have the original unit rebuilt.
2. Put in a Fargo unit. Works like the original.
3. Put in a non-Fargo unit. It will work about as well as the broken unit you are replacing. Complete junk.
As several have said, this is a very easy job. Assuming you have the correct part, the new unit should slip right into the tank as it sits in the car. Done it several times.
Team Owner
Joined: Oct 2000
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From: Washington Michigan
I wrote a tech article in "Corvette Enthusiast" magazine back in 2006 that compared the Fargo sending unit (which was sold by Corvette Central at that time) against an original AC sending unit, and the Fargo unit was an excellent replacement piece that almost perfectly replicated the AC original both electrically and functionally. I have no idea who makes most of the junk sending units available these days, but the Fargo unit compared very favorably in 2006. 
Tech Contributor
Joined: May 2005
Posts: 15,576
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From: Conroe Texas
Anyone - if I posted a photo of my failed repro sending unit, would you be able to tell if it was a Fargo unit? The one that lasted about 2 tanks of gas, was purchased from Corvette Central in 2006.
Team Owner
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From: Washington Michigan
Le Mans Master
Joined: Feb 2008
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From: NJ Hockey beer league
That looks like the unit I had (also from CC) that lasted about 3 years before burning out. I have since come to find out that the resistor wire windings in these repros substitute a slightly undersized wire which leads to premature failures due to current overload. They try to save a penny in a critical area like that and can't understand why people are critical of the poor reproduction parts sold. 
Pilot Dan
Pilot Dan
Tech Contributor
Joined: May 2005
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From: Conroe Texas
That looks like the unit I had (also from CC) that lasted about 3 years before burning out. I have since come to find out that the resistor wire windings in these repros substitute a slightly undersized wire which leads to premature failures due to current overload. ...
Le Mans Master
Joined: Feb 2008
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From: NJ Hockey beer league
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Tech Contributor
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From: Conroe Texas
I even once had a fellow driver tell me I was number 1 
Le Mans Master
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C3 of Year Finalist (stock) 2019
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Ever think a mid-year isn't your best choice in Vettes? I couldn't imagine owning my 66 if I had to pay for a mechanic. And that's just keeping up with it.
Last edited by cor66vette; Feb 11, 2012 at 08:17 PM.
Melting Slicks
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From: Grande Prairie
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What is this one, and whats up with the price? http://www.gastanks.com/1963-67-Corv...ctinfo/20-10A/
Tech Contributor
Joined: May 2005
Posts: 15,576
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From: Conroe Texas
What is this one, and whats up with the price? http://www.gastanks.com/1963-67-Corv...ctinfo/20-10A/
Melting Slicks
Joined: Dec 2009
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Likes: 59
From: Grande Prairie
2024 C2 of the Year Finalist - Modified
2020 C2 of the Year Finalist - Modified
2019 C2 of Year Finalist (appearance mods)
Are they N.O.S.? Price is about triple of what Paragon has to offer.
Le Mans Master
Joined: Jun 2004
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From: Southeast Missouri
What is this one, and whats up with the price? http://www.gastanks.com/1963-67-Corv...ctinfo/20-10A/
Le Mans Master
Joined: Dec 2007
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From: Puget Sound
Team Owner
Joined: Oct 2000
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From: Washington Michigan
Photos below show the Fargo unit I tested and the original AC sender; the Fargo unit had nuts and washers securing the terminals to the flange like the original - most repros have push-nuts (which leak).
I wouldn't trust anything in an AC-Delco box - they haven't manufactured a part for over 25 years; they buy aftermarket stuff by price and stuff it in an AC-Delco box - they're strictly a marketing organization.
I wouldn't trust anything in an AC-Delco box - they haven't manufactured a part for over 25 years; they buy aftermarket stuff by price and stuff it in an AC-Delco box - they're strictly a marketing organization.
Platinum Supporting Vendor
Joined: Feb 2004
Posts: 1,771
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From: Sawyer MI
We have used various vendor's fuel sending units with equally various levels of success. In recent years we have resorted to inspecting every sending unit before stocking. Unfortunately this is not a guarantee against eventual failure.
Heel & Toe
Joined: Feb 2006
Posts: 24
Likes: 0
From: 54 miles SW of Teterville, KS
So what it boils down to for me, is the Fargo unit still available, is it still a quality built and reliable unit, and if so where is it available? If not, does anyone build a high quality, relialbe replacement and where is it available?
Racer
Joined: Feb 2010
Posts: 352
Likes: 7
Please refer to my prior post (#17)
Race Director
Joined: Mar 2002
Posts: 13,646
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From: NorCal
http://truckandcarshop.com/
Then click on the 53-82 Corvette catalog, then go to page 123, and voila!