Proper 69 Chrysler 440 fuel pump

MJFUR

Member
Joined
Nov 12, 2021
Messages
117
Reaction score
99
Location
Texas
The mechanical fuel pump was by-passed by the previous owner and a small electrical pump/fuel line was cobbled together. I am trying to undo all of those repairs.

First photo is what is currently bolted to the engine. (No idea if original or not?)
Second photo is the parts manual which shows that two sections of rubber hose connect to the fuel pump.

I picked up a pump from NAPA, but it had provisions for one rubber hose/one threaded steel line and the inlet-outlet pipes were facing different directions than what is currently on the car. https://www.napaonline.com/en/p/DFPMF0109?impressionRank=15

Anyone have photos or part number for a correct modern fuel pump? Photo of correct inlet/outlet pipe orientation?

Thx

20220120_180015.jpg


IMG_7895.JPG
 
Last edited:

OKDart

Member
Joined
May 18, 2011
Messages
57
Reaction score
25
The reason the threaded fitting is facing the other direction is because the tube that goes in it is c-shaped and ends up in the same spot for the filter/vapor separator. Click link for pic:

MF595A - 1968-71 440 Carter Thermo-Quad 4 Bbl Pump To Carburetor Line; OE Material

I couldn't tell you if yours is supposed to have the threaded type or not.

Be aware that the reason they installed an electric pump could be because the fuel pump push rod is worn down. I would recommend taking it out and measuring it. Should be around 3.2", just eyeballing it, both machined ends should be the same length. There's been a bad run of aftermarket pushrods, so it's best to have OEM.
 

david hill

Senior Member
FCBO Gold Member
Joined
Jul 17, 2017
Messages
1,050
Reaction score
1,848
Location
indianapolis 46226
The dual nipple pump in the pic is for a 350 HP 440. The threaded pressure fitting as described is a 375HP pump. By the way plastic fuel filters are a fire just waiting to happen. Find my thread ( an then it caught fire ), will show what can happen. Always buy steel fuel filters.
 
Last edited:

MrMoparCHP

Old Man with a Hat
Joined
Aug 9, 2013
Messages
5,118
Reaction score
4,583
Location
Lompoc, CA
The dual nipple pump in the pic is for a 350 HP 440. The threaded pressure fitting as described is a 375HP pump. By the way plastic fuel filters area fire just waiting to happen. Find my thread ( an then it caught fire ), will show what can happen. Always buy steel fuel filters.
The 69 parts book has the double nipple one on c-bodies and the fitting one on b-bodies
The 70 parts book has the fitting one on all.


Alan
 

garyh

Well-Known Member
Joined
Aug 19, 2014
Messages
795
Reaction score
457
Location
USA
Why do all the replacement fuel Pumps (Big Block) come with Two gaskets ? I have noticed this for several years now,various brands too.
 

HWYCRZR

Senior Member
FCBO Gold Member
Joined
May 13, 2015
Messages
4,433
Reaction score
5,964
Location
Fargo, ND
I am not sure, but I am glad they do. I was having fuel leaking issues when I put my new pump on. I took it back off so I could take a closer look at the fuel outlet fitting. Turns out it was a worn out flare on my fuel line, so made another, check for leaks and re-installed using the second gasket.
 

Toolmanmike

Super Moderator
Staff member
Joined
Oct 25, 2019
Messages
847
Reaction score
803
Location
Iowa
The mechanical fuel pump was by-passed by the previous owner and a small electrical pump/fuel line was cobbled together. I am trying to undo all of those repairs.

First photo is what is currently bolted to the engine. (No idea if original or not?)
Second photo is the parts manual which shows that two sections of rubber hose connect to the fuel pump.

I picked up a pump from NAPA, but it had provisions for one rubber hose/one threaded steel line and the inlet-outlet pipes were facing different directions than what is currently on the car. https://www.napaonline.com/en/p/DFPMF0109?impressionRank=15

Anyone have photos or part number for a correct modern fuel pump? Photo of correct inlet/outlet pipe orientation?

Thx

View attachment 511054

View attachment 511055
From what I can see it looks like a big block. The fuel pump should have a short arm and a pushrod to drive it. Often the pushrods are worn and are so short they won't operate the pump properly.
 
Top