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Fuel Pump question

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Old Aug 24, 2012 | 12:47 PM
  #1  
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Default Fuel Pump question

Been awhile since I've been on...but I've not forgotten about you all...

I just came upon a frustrating situation: My Fuel Pump recently gave up the ghost so I got a new one. As usual I dinked around with other stuff (mostly fishing and golf) for a few weeks until I got the itch to drive the vette...so I decided to put the fuel pump in which brings me to my question.

After installing the pump I went to reconnect the short piece of rubber/flexible fuel line from the "nipple" on the pump to the steel gas line and now the flexible rubber hose "kinks" causing the car to run rough due to lack of fuel. I've tried various lengths of rubber hose and different configuations of loops etc. but cannot avoid the hose kinking...which now leaves me wondering if the "nipple" on the bottom of the fuel pump is pointed in the wrong direction.

A couple of items:

Admittedly, I bought the fuel pump from a local automotive parts store and is supposedly correct for my engine.

I haven't changed anything else so the only difference to date is the pump but I don't have the old fuel pump to compare.

I've looked at the few books I have (Nolan Adams, AIM, etc.) and I just can't find a good enough example of what the bottom of a correct fuel pump should look like.

Any help or thoughts would be much appreciated...thanks

car is a 66' with 327 and automatic trans
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Old Aug 24, 2012 | 01:24 PM
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Should be a steel line from pump to carb...
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Old Aug 24, 2012 | 01:25 PM
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What is the pump make and model?? Can you post a picture??

I have a 1967 small block car and the replacement AC DELCO #40503 fuel pump required that I use a longer hose and loop it in a small semicircle from the steel fuel line DOWN to the fuel pump connection. It has a slight "high spot" in the rubber hose, but it has not affected pump operation in any way.

Larry

Last edited by Powershift; Aug 24, 2012 at 01:31 PM.
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Old Aug 24, 2012 | 01:39 PM
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Originally Posted by 6tee6
Been awhile since I've been on...but I've not forgotten about you all...

I just came upon a frustrating situation: My Fuel Pump recently gave up the ghost so I got a new one. As usual I dinked around with other stuff (mostly fishing and golf) for a few weeks until I got the itch to drive the vette...so I decided to put the fuel pump in which brings me to my question.

After installing the pump I went to reconnect the short piece of rubber/flexible fuel line from the "nipple" on the pump to the steel gas line and now the flexible rubber hose "kinks" causing the car to run rough due to lack of fuel. I've tried various lengths of rubber hose and different configuations of loops etc. but cannot avoid the hose kinking...which now leaves me wondering if the "nipple" on the bottom of the fuel pump is pointed in the wrong direction.

A couple of items:

Admittedly, I bought the fuel pump from a local automotive parts store and is supposedly correct for my engine.

I haven't changed anything else so the only difference to date is the pump but I don't have the old fuel pump to compare.

I've looked at the few books I have (Nolan Adams, AIM, etc.) and I just can't find a good enough example of what the bottom of a correct fuel pump should look like.

Any help or thoughts would be much appreciated...thanks

car is a 66' with 327 and automatic trans
Earlier 300hp 66's used the 4657 screw-together pump, with the inlet and outlet 72* apart. Later 66's (and 67's) used the 40433 pump with the crimped-on bottom and the inlet and outlet 180* apart. Each pump used a different pump-to-carb hard line due to differing positions of the pump outlet fitting.
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Old Aug 24, 2012 | 02:33 PM
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I probably needed to specify that the problem is NOT from pump to the Carb (The steel line from the pump up to the carb hooked up perfectly) However, from the "intake" side where the steel gas line ends there is a short section flexible rubber gas line and that's the line that "kinks" now.
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Old Aug 24, 2012 | 03:28 PM
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Default John Z. "Thanks"

John,

Thanks for the pics...I have an early 66 (build date Sept. 65). I've been looking on line at fuel pumps from several of the dealers out there, i.e. LIC, ZIP, Ecklers, etc. I can get the fuel pump I need from most but the question I have is "Do you know if one also has to purchase the "Nipples" to screw in to the fuel pump? Just not clear in photos and product descriptions.

Thanks, and no more silly questions
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Old Aug 24, 2012 | 07:16 PM
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From: Ocean Township NJ
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Originally Posted by 6tee6
John,

Thanks for the pics...I have an early 66 (build date Sept. 65). I've been looking on line at fuel pumps from several of the dealers out there, i.e. LIC, ZIP, Ecklers, etc. I can get the fuel pump I need from most but the question I have is "Do you know if one also has to purchase the "Nipples" to screw in to the fuel pump? Just not clear in photos and product descriptions.

Thanks, and no more silly questions

On page 54, looks like you need part nos. 27 and 5034S shown in the diagram in the upper right:

https://www.paragoncorvette.com/corv...talog/c2/#/54/
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Old Aug 24, 2012 | 10:11 PM
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I have a NOM car that I dropped a 350 in and had a concern about the sharp bend in my fuel line too.
I bent a 3/8" chunk of steel fuel line and put that in place.
The first photo shows an AC hard line, and two bent fuel line sections.
I used the one on the far right, but cut another inch or more off each end.
Second photo shows it installed.
I know it's not correct, but it solved my kinking problem.
Jim
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Old Aug 26, 2012 | 10:40 AM
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Default Thanks guys

Thanks for the help guys...as usual GREAT info!!!
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Old Aug 26, 2012 | 11:12 AM
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http://www.goodyearep.com/productsdetail.aspx?id=16154

These will do the job also.
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Old Dec 25, 2012 | 08:51 PM
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Default my old car

HI there, I see you still have my old Car. My name is Al Dupuis and I live in Kamloops B.C. I talked to you on the phone 9 years ago ( aprox ). I was just cruising around the web and found one of your blogs about finding me in Kamloops. I still have the old vette in my blood ( 63-67 ) I wish I would of kept at least one of the 3 that I had. I am sorry for cutting the hole for the stereo and selling the original engine but when you are 17 you don't care about stuff like that. You still have a VERY NICE keep sake there! Cheers, Al My email is dupuis16@shaw.ca
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