1963 Fuel Pump Inlet fitting

[William C.]

Re: 1963 Fuel Pump Inlet fitting

For starters, have you checked for the correct clocking of the inlet and outlet? I've shown a picture from below with correct rotation. Also remember the fitting was not installed (if I'm reading the assy manual correctly) until after the pump was installed on the engine and the engine installed in the car...

[Stuart F.]

Re: 1963 Fuel Pump Inlet fitting

Alexander:

You even have me confused (that's easy), but my L-76 SHP 63 uses a 90 degree fitting on the pump inlet, facing the frame rail at about a 45 degree angle, along with a short length of tubing to which the hose from the tank line attaches. The outlet side has the straight fitting toward the front center of the car to which the "chrome" tube with a 90 degree bend attaches and runs to the filter. The 63 pump, if I recall correctly, has a different fitting "clocking" then the 64 on up.

Stu Fox

[Michael H.]

Re: 1963 Fuel Pump Inlet fitting

I think the problem is with the inlet side Thanks

Here's one that has never been apart. This is the inlet pipe and fitting.

[Stuart F.]

Re: 1963 Fuel Pump Inlet fitting

Michael;

Just goes to show Alexander that there are several ways the inlet can be applied, and each will work. My pump is original and my fitting is 45 degrees CC from yours, and the tube then faces upward. I have about 3/4" to 1" clearance to the frame rail and a nice upward bow in the connection hose to the fuel line. I suspect your pump will provide more frame rail clearance, but I have never had any concerns with mine. Perhaps if I ever had a broken right side motor mount I might have a problem. Interesting.

Is there an AIM instruction on this? This tweeks my curiosity.

Stu Fox

[Harry S.]

Re: 1963 Fuel Pump Inlet fitting

Stu, does yours have the frog pads?

[Michael H.]

Re: 1963 Fuel Pump Inlet fitting

Stu, does yours have the frog pads?

Bet a lotta folks are going to say "HUH". Frogs? I'll let Harry splain what frog pads are.

[Michael H.]

Re: 1963 Fuel Pump Inlet fitting

Michael;

Just goes to show Alexander that there are several ways the inlet can be applied, and each will work. Stu Fox

Hi Stu.... Yes, I suppose there are a few different ways the inlet fitting and pipe can be installed. The configuration in my pic's would be the most common and correct though, I think.
I believe the AIM shows the pipe and fitting this way too.

[Stuart F.]

Re: 1963 Fuel Pump Inlet fitting

Michael:

You are correct sir. AIM page C-164 shows the connection per your photos, stating the pipe then is to align parallel to the centerline of the vehicle. The bow in the hose will then face to the rear, as opposed to the top as with mine. Mags sense to me - you get more frame clearance and better fuel hose flex motion with engine movement. Some day when I am real energetic I may correct that.

In my foggy memory, I may well have changed the fuel pump about 30 or so years ago. My main recollection regards how to stop the fuel once you diconnect the line. Now THAT one remembers. My pump is probably a replacement then. One detail I can see is that the AC is on the surface facing to the front, not on the top as in your photo.

I apologize if I may have steered anyone in a wrong direction.

Stu Fox

[John H.]

Re: 1963 Fuel Pump Inlet fitting

Also remember the fitting was not installed (if I'm reading the assy manual correctly) until after the pump was installed on the engine and the engine installed in the car...

Bill -

The inlet fitting, curved tube, and rubber hose were installed on the fuel pump on the Engine Dress Line, and the rubber hose was connected to the frame fuel line after the engine was dropped in the chassis; see plant photo below.

The Assembly Manual shows the pump installation in UPC 6 and the fitting, tube, and hose in UPC 8 only because those are the UPC groups where the Engineering Releasing System assigned those components; that assignment is unrelated to the sequence of assembly.

[William C.]

Re: 1963 Fuel Pump Inlet fitting

'64 uses the 40083 pump on 365-375 hp applications with the inlet and outlet 180 degrees across from each other, totally different animal.

[Dan H.]

Re: 1963 Fuel Pump Inlet fitting

'64 uses the 40083 pump on 365-375 hp applications with the inlet and outlet 180 degrees across from each other, totally different animal.

That's correct Bill, I was changing a 'slightly' non original fitting and found that it must have been installed on the pump prior to pump installation. Couldn't turn the one like Alans due to frame interference. Only needed a 1/2 inch or less to clear, jacked the engine up and presto, correct fitting in place.
Dan

[Alexander M.]

Re: 1963 Fuel Pump Inlet fitting

Thanks for the pics and the AIM lead. That should give us enough info. We may need to take the pump apart to re-align the fittings per photos.
Happy Thanksgiving to All
AL

[Bill C.]

Re: 1963 Fuel Pump Inlet fitting

Ok Harry; I give up. I thought someone else would ask. Frog pads??
Regards
Bill

[John D.]

Re: 1963 Fuel Pump Inlet fitting

[quote=Bill Coffin (47513);523166]Ok Harry; I give up. I thought someone else would ask. Frog pads??
Regards
Bill[/quo

Bill, The frog pad subject would require a younger guy than me to discuss. Use the search at the top of the page.

Meanwhile I feel guilty for such a lousy answer. The later style 4657 pumps have a casting "upgrade" with several pads on the boss areas where the threaded ends of the screws poke up thru.
As far as fittings and fit goes the pumps are identical.
Typically one can identify a frog pad pump as it has a suffix after the number. For example: 4657FF. Key word is typical.

Meanwhile Hanson that's some very nice pics you put up. Just printed them. Thanks very much.
All this talk about pumps and not a word (unless I missed it) about upgrading your pumps for ethanol.
You really have to skip around in the crude AIMS for pump pics.
All my AIMS are Drafting Graphics. See pg 132, 133, 164.
The other reprint page numbers are 143, 145 and ?

Happy Thanksgiving gang. JD

[Harry S.]

Re: 1963 Fuel Pump Inlet fitting

John, thanks for jumping in. I'm busy with family from NY and NC for the holiday.