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Username Post: Leaking fuel pump        (Topic#347084)
AmericanPie 
Senior Member
Posts: 498

Loc: Camarillo, CA
Reg: 07-28-01
09-10-17 05:21 PM - Post#2707320    

I just fired up my '65 after sitting for almost a year and the fuel pump is suddenly leaking profusely. It may very well be the original pump and the car has sat for extended periods so I'm not too surprised it needs replacement. However the leak is near the crimp where the upper and lower bodies of the pump are joined. I find it a little odd that it would leak from that juncture. Has anyone else experienced this?

My car's all original so I'd like to buy an OEM-style replacement fuel pump. Any suggestions for a source?

Classic Industries has this one but it looks different than the AC pump because the two halves of the body appear to be bolted (rather than crimped) together; is this my best choice?
https://www.classicindustries.com/product/1965/che...



1965 Impala SS 327 (Crocus Yellow)


 
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impalatom 
Senior Member
Posts: 304
impalatom
Loc: Iowa
Reg: 03-17-01
09-10-17 05:38 PM - Post#2707321    
    In response to AmericanPie

I am thinking the original fuel pump for the 327 was the rebuildable style that bolts together. That is what is on mine. I have also seen this rebuildable style in the service manual.

65 Impala SS convertible 55 Nomad 03 red 'rado 5.3 2wd ext cab.


Edited by impalatom on 09-11-17 04:38 AM. Reason for edit: No reason given.

 
vet65b 
"7th Year" Gold Supporting Member
Posts: 565
vet65b
Loc: Albuquerque, NM
Reg: 02-09-06
09-10-17 06:24 PM - Post#2707331    
    In response to AmericanPie

AmericanPie,
The original pump for your Impala, if it's a small block, is Delco #4657. It does screw together and is rebuildable. kits are available from several sources, and you may be able to find a core at a swap meet. Bill



 
AmericanPie 
Senior Member
Posts: 498

Loc: Camarillo, CA
Reg: 07-28-01
09-10-17 07:05 PM - Post#2707338    
    In response to vet65b

Hmmmm. Maybe the pump that's on my car is an aftermarket then, because it doesn't appear to be bolted together. I'll remove it and see what I've got.

Edit: It does have "AC" cast on it so maybe it is a later factory replacement.

1965 Impala SS 327 (Crocus Yellow)


Edited by AmericanPie on 09-10-17 11:08 PM. Reason for edit: No reason given.

 
Oshawa65SS 
Contributor
Posts: 726
Oshawa65SS
Age: 57
Loc: Burnaby BC Canada
Reg: 09-22-14
09-10-17 08:41 PM - Post#2707347    
    In response to AmericanPie

It could also be the later Delco replacement.
I have one for 5/16" fuel line NOS in the box with an instruction sheet dated 1975 detailing how to rebend the original fuel line to fit this crimped type pump.
What's also correct for my 65 283 2V is the fuel line configuration and screwed together type pump pictured here, although it wouldn't be the 3/8" line setup:
http://www.chevytalk.org/fusionbb/showtopic.php?ti...

Ryan

65 Impala SS convertible 283 2V with Powerglide and 10 bolt 3.08 open
Build date Dec. 21 '64 Oshawa


 
AmericanPie 
Senior Member
Posts: 498

Loc: Camarillo, CA
Reg: 07-28-01
09-11-17 08:36 AM - Post#2707388    
    In response to vet65b

  • vet65b Said:
AmericanPie,
The original pump for your Impala, if it's a small block, is Delco #4657. It does screw together and is rebuildable. kits are available from several sources, and you may be able to find a core at a swap meet. Bill



Bill, where did you get that information? If I have to go on the hunt for one I'd like to get a good picture of what the correct pump looks like, and make sure the inlet/outlet ports are oriented properly. I've seen several on eBay that claim to be 4657s but the ports aren't always in the same location.


1965 Impala SS 327 (Crocus Yellow)


Edited by AmericanPie on 09-11-17 08:37 AM. Reason for edit: No reason given.

 
vet65b 
"7th Year" Gold Supporting Member
Posts: 565
vet65b
Loc: Albuquerque, NM
Reg: 02-09-06
09-12-17 07:47 AM - Post#2707481    
    In response to AmericanPie

Info came from the assembly manual for 1965 Impala. The last four numbers will be stamped on the mount flange of the pump. As for the orientation of the inlet/outlet, the pump can be assembled many different ways. Send me your email address and I can send you pics of a spare 4657 I carry in the trunk. It will be later this evening before I can get you the pic. Bill



 
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