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What fuel pump is this?

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Old Sep 10, 2018 | 03:24 PM
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Default What fuel pump is this?

Hi,
I have is acdelco fuel pump and I don't have any clue as to what its for? Im hoping someone might know...
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Last edited by nix1981; Sep 10, 2018 at 03:25 PM.
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Old Sep 10, 2018 | 03:58 PM
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The numbers are difficult to read .. can you tell us what the numbers are?
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Old Sep 10, 2018 | 04:01 PM
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Sort of...to me it looks like it reads 262402080

Last edited by nix1981; Sep 17, 2018 at 01:49 PM. Reason: added a 2
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Old Sep 17, 2018 | 01:48 PM
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Anyone? I'm looking to put this on my 69 350/300 auto. I don't know anything really about fuel pumps...I'd order a new one but this one seems like it's okay, I just don't know if it's meant to go on this car.
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Old Sep 17, 2018 | 02:13 PM
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do the fittings look the same as what is on the car now?
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Old Sep 17, 2018 | 02:13 PM
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Can't see the output side but it should be 5/8-18. Some have a smaller thread.
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Old Sep 17, 2018 | 02:34 PM
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Originally Posted by MelWff
do the fittings look the same as what is on the car now?
The fitting size does, but the one that was on it was a Peirce and the part that has the barb is extended down. It looks like what's on some of the BB cars.
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Old Sep 17, 2018 | 02:35 PM
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Originally Posted by 69L46vert
Can't see the output side but it should be 5/8-18. Some have a smaller thread.
Are the differences in the threads? I have all new lines, I can check this when I get home tonight. If it all lines up, should I be able to use it?

Last edited by nix1981; Sep 17, 2018 at 02:39 PM.
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Old Sep 17, 2018 | 02:39 PM
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Originally Posted by nix1981
Are the differences in the threads? I have all new lines, I can check this when I get home tonight.
Yes, Some pumps that will look nearly the same but will have 1/2" thread. Otherwise identical.
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Old Sep 17, 2018 | 02:45 PM
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Just some additional photos I had. I'll check the fittings tonight. If they're the same size should I be able to use the pump? I just didn't know if this was the right look to the 69 either since the one that was on it seems to look like what's an a BB with the barb (non-threaded) part longer.


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Old Sep 17, 2018 | 07:11 PM
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Originally Posted by 69L46vert
Can't see the output side but it should be 5/8-18. Some have a smaller thread.
Seems to me it's 5/8". The new pump to carb lines fit as well.

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Old Oct 4, 2018 | 09:06 PM
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So, I wanted to follow up on this. The more I start looking at these pumps, the more I find that they're significantly different and all the vendors seem to have a variation...even with the AC stamped pumps. As it stands, I've not been able to find anyone to identify the AC pump I've posted, so I bought a new one from one of the big vendors (Carter pump I think?) for a 68-69 327 or 350. Like the AC pump, it has the small inlet but the barb is pointed in the opposite direction. It says it's a replacement for 40709. The pump that the PO had on the car has the long inlet and is a Pierce? replacement with the barb in yet another position (there is no part number on it). The thing is, is that the old Pierce pump is what allows the "S" hose to line up properly with the fuel lines. Both the new pump and the AC pump requires the hose to be a bit contorted in order to connect. So, I'm still lost as to what pump belongs on my car????? It's a 69 early (10/68) 350/300 AT. I need help.



Notice the barb location. New Carter pump (40709) on left, AC pump in the middle, and Pierce on the right.
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Old Oct 5, 2018 | 04:51 PM
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Does the Carter on the left work with a straight piece of hose?
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Old Oct 5, 2018 | 04:54 PM
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have you seen this pump looks like the one on the right
https://www.paragoncorvette.com/p-35...ump-w-350.aspx
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