Correct 440 fuel pump?

JohnDizzy · Oct 17, 2018

I have a 1969 440 RB in my 1973 charger that I suspect the mechanical fuel pump went on. I am looking to replace with a new mechanical pump but the people behind the counter at my local NAPA and AutoZone have no idea. They just turn the screen around and ask me to look at a list of about 10 pumps, none of which look think what is on the car now (two nipples clock 180 degrees from each other and). I am having the same issue when searching online. Any help would be appreciated.

moparnation74 · Oct 17, 2018

Carter M4434 was the original fuel pump for 69......

https://www.jegs.com/i/Carter/180/M4434/10002/-1

JohnDizzy · Oct 17, 2018

Interesting....this is the pump that was on it.

miller · Oct 18, 2018

JohnDizzy said:
...this is the pump that was on it.

That's the plain jane stock pump. Link won't work, moparnation gives, but probably Carter high performance pump, that's usually used.

Be sure to check the pump shaft length, that's separate from the pump itself.

Bill Monk · Oct 18, 2018

I run this pump, it would be more correct for the Hemi or 440 6bbl. Good pump
https://www.summitracing.com/parts/crt-m6903/overview/make/plymouth

moparnation74 · Oct 18, 2018

miller said:
That's the plain jane stock pump. Link won't work, moparnation gives, but probably Carter high performance pump, that's usually used.

Be sure to check the pump shaft length, that's separate from the pump itself.

Yeap as I said stock pump but the link just worked for me on a different device.....

JohnDizzy · Oct 18, 2018

How do you verify the shaft length? I don't see a length in the descriptions online for either of the pumps above. I put this pump on earlier today because another local NAPA said it was the correct one but i am not getting fuel to the carb even after a couple mins of cranking. I pulled the pump inlet line off and dropped it in a fuel can to shorten the length but still no fuel to the carb. www.napaonline.com/en/p/CFPB0015P

Bill Monk · Oct 18, 2018

JohnDizzy said:
How do you verify the shaft length? I don't see a length in the descriptions online for either of the pumps above. I put this pump on earlier today because another local NAPA said it was the correct one but i am not getting fuel to the carb even after a couple mins of cranking. I pulled the pump inlet line off and dropped it in a fuel can to shorten the length but still no fuel to the carb. www.napaonline.com/en/p/CFPB0015P

Are you aware that there is a fuel pump pushrod between the pump lever and the cam? If that's not where it should be, there's your problem. I would think it nearly impossible to install the pump if the rod fell to the bottom though

miller · Oct 19, 2018

JohnDizzy said:
How do you verify the shaft length?

Most call it a rod. My bad.

Shaft/rod length should be 3.22". To pull it, pump is off, and just under the mounting pad, is a hex plug. Pull the plug, to allow the rod to come out. Be aware that some aftermarket rods are not made as well as the stock factory...they will wear faster.

Installing the mess, lube and insert the rod, plug back in. The 'arm' on the fuel pump goes 'under' the arm, so the rod gets pushed up, placing the pump arm under it.
If your not getting any fuel past the pump, might try a little prime. Use an air compressor, very low pressure, at the gas tank fill tube. Just a couple short blasts of air pressure. That forces fuel through the gas lines, to the pump, and it should pick it up. If not, something else is going on.

Daves69 · Oct 19, 2018

JohnDizzy said:
........I pulled the pump inlet line off and dropped it in a fuel can to shorten the length but still no fuel to the carb.

So maybe you missed getting the pump arm end under the pushrod while installing the pump. Some grease placed to hold the pushrod up while you position the pump and bolt it up may help. Depending on wear and cam position you may feel the spring load of the pump arm compressing as you run the bolts down evenly.
Here's some pictures that may help you. (Click "next" for the next picture)...……
http://www.fmcowners.com/mbbs22/photos/show-album.asp?albumid=100&photoid=2403

A bent or worn out pushrod is possible. The pushrod end should be smooth without a sharp edge indicating wear. It should not bind in it's range of motion.

Then too, although unlikely, just because a fuel pump is "new" doesn't automatically make it good.

biomedtechguy · Oct 26, 2018

Bill Monk said:
I run this pump, it would be more correct for the Hemi or 440 6bbl. Good pump
https://www.summitracing.com/parts/crt-m6903/overview/make/plymouth

Man that's a good bit less than Mancini charged me-ON SALE-at a big Mopar show about 2 + some years ago...
I think I paid $109 and was happy to!
Carter M6903

Bill Monk · Oct 27, 2018

biomedtechguy said:
Man that's a good bit less than Mancini charged me-ON SALE-at a big Mopar show about 2 + some years ago...
I think I paid $109 and was happy to!
Carter M6903

I like Mancini and have bought a lot of parts from them but all things equal, it's hard to beat Summit on price

biomedtechguy · Oct 28, 2018

Bill Monk said:
I like Mancini and have bought a lot of parts from them but all things equal, it's hard to beat Summit on price

I use Summit almost exclusively for aftermarket parts. What I am absolutely sure of is my Carter M6903 from Mancini is made in the United States. Some are not, FWIW.
Mancini was the reason why this AWESOME mech fuel pump is available-again!

Correct 440 fuel pump?

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