1963 Fuel Pump Inlet fitting

[Michael G.]

Re: 1963 Fuel Pump Inlet fitting

Did those brass elbows have any sort of supplier mark on them?

Thanks,

[John D.]

Re: 1963 Fuel Pump Inlet fitting

Maybe I confused you JD. Sorry. No chrome fittings were used on the fuel pump. Only natural unplated brass.

The only chrome fittings would be at the fuel filter on cars built after 3 January 63.

MH, Doesn't take much to confuse me as I forgot what I learned yesterday.
So the 63 4657 fuel pump has NO chrome fittings on the FI cars. Just bare brass ones no matter when the 63 was built. Right?

But it's a different story on the fuel filter fittings as you mentioned. Thanx, JD

[Michael H.]

Re: 1963 Fuel Pump Inlet fitting

MH, Doesn't take much to confuse me as I forgot what I learned yesterday.
So the 63 4657 fuel pump has NO chrome fittings on the FI cars. Just bare brass ones no matter when the 63 was built. Right?

But it's a different story on the fuel filter fittings as you mentioned. Thanx, JD

Correct. No chrome fittings on a 4657 fuel pump. (or any other 63-67 fuel pump)

[Alexander M.]

Re: 1963 Fuel Pump Inlet fitting

Gentlemen,
Many thanks for all your helpful info and pictures. I believe I know what it should be, now I just need to find them!
Al

[John D.]

Re: 1963 Fuel Pump Inlet fitting

Al, I go to NAPA for brass fittings. Lets make this easy and then the guys can correct me if I am wrong.
You need two pump fittings. Both of the fittings need to be 1/4" pipe.
One is straight and one is a 90 degree.
Both fittings need to be for a 5/16" line.
Notice the chrome line that goes to your GF-90 has a big 90 degree loop at the end where it fits into the pump via a fitting. So you need: One straight 5/16 X1/4" pipe for the chrome line.
You have the nice pic for the other fitting. It's a 90 degree 5/16 X1/4" pipe.
Don't use any teflon tape. I use a loctite 545 hydraulic sealant. Shake the bottle and apply it sparingly with a q-tip holding back about 1-1/2 threads. JD

Loctite 545 is available from industrial tool places like Travers, MSC, etc. Not available in auto stores. I use it a lot while assembling fittings on the old fuel injections. Properly used the Loctite can be a life saver. Barry Holmes introduced it to me around 1990.

QT for the gang here. I am correct in stating that the 90 degree fitting is for a 5/16 line or is this line a 3/8"???

[Wayne M.]

Re: 1963 Fuel Pump Inlet fitting

.....QT for the gang here. I am correct in stating that the 90 degree fitting is for a 5/16 line or is this line a 3/8"???

John -- measured 0.375" OD on the tubing (goes oval in the bend of the '63 inlet). I show against original '69 tri-power tube and fitting (notice the Weatherhead markings).

To Michael: Don't believe my '63 (?) brass elbow had any markings on it, but I wire-brushed the whole rusted assembly, and had a devil of a time breaking loose the tube from the fitting, so maybe I obliterated any identifier .

[Michael H.]

Re: 1963 Fuel Pump Inlet fitting

To Michael: Don't believe my '63 (?) brass elbow had any markings on it, but I wire-brushed the whole rusted assembly, and had a devil of a time breaking loose the tube from the fitting, so maybe I obliterated any identifier .

Wayne, I agree. I just dug out an original used 4657 pump that still has the 90* fitting and pipe in place. It has no markings or mfg logo.

I don't have the straight outlet fitting though.

[John D.]

Re: 1963 Fuel Pump Inlet fitting

Al, I go to NAPA for brass fittings. Lets make this easy and then the guys can correct me if I am wrong.
You need two pump fittings. Both of the fittings need to be 1/4" pipe.
One is straight and one is a 90 degree.
Both fittings need to be for a 5/16" line.
Notice the chrome line that goes to your GF-90 has a big 90 degree loop at the end where it fits into the pump via a fitting. So you need: One straight 5/16 X1/4" pipe for the chrome line.
You have the nice pic for the other fitting. It's a 90 degree 5/16 X1/4" pipe.
Don't use any teflon tape. I use a loctite 545 hydraulic sealant. Shake the bottle and apply it sparingly with a q-tip holding back about 1-1/2 threads. JD

Loctite 545 is available from industrial tool places like Travers, MSC, etc. Not available in auto stores. I use it a lot while assembling fittings on the old fuel injections. Properly used the Loctite can be a life saver. Barry Holmes introduced it to me around 1990.

QT for the gang here. I am correct in stating that the 90 degree fitting is for a 5/16 line or is this line a 3/8"???

Wayne, Thanks for pointing out the 90 degree fitting is for a 3/8" line.
This fitting is readily available at any good auto store.

[Michael H.]

Re: 1963 Fuel Pump Inlet fitting

John,

Do you know if that 90* fitting is available with the original 11/16" wrench size? It seems most fittings of that style increased that dimension several years ago because of durability issues.
The original that I have here is 11/16".

Same issue for the 90* fuel pump fitting for 65-66 big block, if I remember correctly.

[John D.]

Re: 1963 Fuel Pump Inlet fitting

A lot of our favorite fittings have turned into "fat" fittings. For the old FI's we have the same problem. Anytime I am in a new town I always hit a couple of the older looking auto store in search for the good fittings.

Al, Go on ebay #350411428493 for the 90 degree fitting. Not saying to buy it or not to buy it but there is a nice bright pic with the listing. Cost is 3.95 plus 6.99 shipping. Has an unknown logo heavily stamped on it.
90 degree inverted flare . 3/8 tube and 1/4" thread (pipe).
Now take this pic and Waynes pic to NAPA and grab a couple. If they have a logo just zip it off with nice deburring wheel as I do all the time.

While you are at NAPA buy the other fitting. The fat straight fitting. 5/16"inverted flare and 1/4" thread. By a couple of them. Anytime you have to put a lot of effort into buying a part pick up a spare.

[Alexander M.]

Re: 1963 Fuel Pump Inlet fitting

Thanks John, and everybody else! Off to NAPA this week.

[Alexander M.]

Re: 1963 Fuel Pump Inlet fitting - Photo Needed

Hi,
We are having some difficulty installing the straight fitting into the fuel pump due to space restrictions with the frame. Could someone please post a photo of an installed pump on a 63 with fuel injection so we can see if our orientation is correct?
Thanks,
AL

[William C.]

Re: 1963 Fuel Pump Inlet fitting - Photo Needed

If you have frame interference, I'd look at the "clocking" of the base to the top. I can send you a picture frm my '65 if you need it, let me know, the parts you are looking at are the same '63-65 on a Fuel car. (with the exception of the pump, but the outlet is in the same location, the inlet location changes in '64)

[Alexander M.]

Re: 1963 Fuel Pump Inlet fitting

I think the problem is with the inlet side if I am correct. The 90 degree fitting connects to the outlet side and runs up to the fuel filter. The inlet side gets the straight fitting should be attached to the short length of rubber hose that comes from the tank supply side. Am I correct? The inlet and outlet are fairly close together - say 12 o'clock and 2 o'clock. Pump came from LI Corvette.
Thanks

[Dan H.]

Re: 1963 Fuel Pump Inlet fitting

Just had the same interference problem yesterday. Got clearance by removing both motor mount long bolts and gently with pads jacking the engine about 3/4 in for the clearance.
Dan