1964 40083 fuel pump inlet fitting configuration

[John R.]

Attached are photos of a replacement 40083 fuel pump removed from a 2 owner (1 one owner up to 2016), 73k actual mileage, 1964 SHP 365 hsp car. It's an early build Sept 1963 survivor type car. I am seeking opinions on the inlet and outlet fittings. My hunch is that this car probably only had 1 fuel pump replacement in its life. Furthermore, when the pump was changed in the past, one would think the old fittings were simply transferred from the old (possibly original) fuel pump to this replacement pump. If this is the case, then why is the inlet fitting in the photos what I would expect to see on a NON SHP pump (think 1963 used this type of inlet fitting on the 340 and 360 SHP pumps, but they did not use the 40083 until 1964). Does anyone have an early 1964 SHP pump configured this way? Maybe it's a 1963 carryover up to some point in 1964 production. I guess someone could have replaced the original inlet fitting too, but why? Per the outlet fitting does it look correct?

I am replacing the fuel pump and want to make sure I have the correct fittings.

[John R.]

Re: 1964 40083 fuel pump inlet fitting configuration

BTW, while researching the forum and for comparison to the pump above, here is a photo of a 40083 pump with correct inlet fitting. Its off a March 1964 production car.

[Mike M.]

Re: 1964 40083 fuel pump inlet fitting configuration

our three 65 FI vets have inlet fittings liken the 2nd post's photo. the vets are mid December, late jan and early feb 65 375 HP cars with their 40083 pumps. mike

[John R.]

Re: 1964 40083 fuel pump inlet fitting configuration

Thanks Mike. So at least from March 64 and your 65's we can confirm the fitting in the second post as correct.

Still hoping someone has an early 64 like mine and can comment. In further thought about this, could it be possible that Early 64 365 SHP had leftover 63 SHP pumps(4657, not 40083) and therefore used the inlet fitting in the first post? Wonder if anyone has seen or has an early 64 365 or 375 hsp with the 4657 from the factory? When exactly did the 40083 show up in production?

[Alan D.]

Re: 1964 40083 fuel pump inlet fitting configuration

Here is a Mar64 pump, at one time it was not accepted as original - good thing I did not toss. The pump with the fat bottom was rumored as original, that may be the 63 pump, 559467 (not sure need to ask the 63 guys) Ref your 64AIM, sec L76 sheet 4.00 for view of fittings and sec L84 sheet 2.00 (FI using same pump)
The lower HP motors used same pump till 5/5/64 when it was replace by 5594657, sec 6 sheetC1.00

[John R.]

Re: 1964 40083 fuel pump inlet fitting configuration

Alan, would you happen to know or have a photo of the fuel pump bolts? Headmarks? Assuming they are zinc or cad as the JM states.

[Alan D.]

Re: 1964 40083 fuel pump inlet fitting configuration

Here is what I have on a Mar64 car. I've had 2 fuel pumps over the years so can not confirm these are original.
The original and later replacement were both the 0083.
These can be confirmed once you open them (rebuilding) by inside markings and dates, it's been discussed before on forum.
Alan

[John R.]

Re: 1964 40083 fuel pump inlet fitting configuration

Alan, thank you.

I just added a photo of a 1963 FI 360 hsp motor out of Nolands book page 161. It appears to have the 4657 pump with the fittings I have on my '64's replacement 40083. Just wondering if it is possible very early '64 365 and 375hsp cars had the same set up as 1963 360 and 340 hsp. Maybe early 64 SHP cars were fitted with the 4657 until they transitioned to the 40083. Anybody out there have a September build 1964 SHP car that can take a look at your fuel pump and tell me if you have a 4657 or 40083? Thanks!