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Fuel Pump Ponderings

Posted By Bill Childs 10 Years Ago
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Bill Childs
Posted 10 Years Ago
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Very nice installation there Steve.

All good info sharing Ted. Thanks for jumping in and providing more fuel for thought.

Just picked up my FE 390 cannister filter style fuel pump at Napa. Part #6523. The parts guy printed out a massive list of applications for this pump. The Y blocks were definitely on the list. Now I just hope the spin on filter clears my Chysler Cordoba IFS.

Bill C
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Drag it home, figure it out.
GREENBIRD56
Posted 10 Years Ago
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This is the data I got from Holley about the "best fit" (80 GPH) pump for the duty. There are actually two ratings shown - one for "no load" - and one at the required feed pressure. I think the 110 GPH outfit is rated at no load - and the 6 psi is max pressure. You need to look at the chart for the 110 GPH pump.
http://forums.y-blocksforever.com/uploads/images/ee3bc5c4-4739-4689-8d8c-2ac0.jpg 
Below - this is the AC DELCO GF62 canister filter I usually recommend.
http://forums.y-blocksforever.com/uploads/images/78b13ea8-cbb2-4815-9190-999d.jpg 
It has pipe threads at the inlet and outlet so you have to get the necessary adapter fittings to go to the flared style of tubing. The two fittings listed as going on each end of a Thunderbird glass bowl unit fit 5/16 flared tubes and work fine on the pressure side of the pump. The 5/16 tube will flow way more fuel than needed for a typical Y-block engine with a 4bbl carb.



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 Steve Metzger       Tucson, Arizona
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Steve, I totally agree that the old Carter is a way more sanitary unit, the problem with it is that in my interweb browsing it appears to be no longer manufactured and likely not supported by Carter (not yet confirmed). There are some nice 390 FE pumps with no filter, Edelbrock makes the Performer RPM series (model 1724), the 110 GPH is plenty for my 312, the pressure is 6 PSI stating no need for a regulator. Hard tubing and an inline filter and I could have clean safe fuel delivery from pump to carb.

Edelbrock Performer Series edited to add link

Thanks for kicking this around, Bill I didn't mean to hyjack hope this helps with your thinking on a pump.



Ted, Redding, CAhttp://www.y-blocksforever.com/forums/Uploads/Images/db7e67de-6104-4dd8-93b7-6798.jpg
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Ted - that second pump, the Carter that you included a photo of - is the one I would choose if I had space under the mounting point. Just need to determine the model number. Direct mounted filter housing and no extension in the casting hanging it down in the breeze is a good design.

T-birds have NO space under the fuel pump so my choice was the High Perf 428 (Airtex 362), had to disassemble and "re-clock" the ports to match the car - and then I mounted the canister style GF62 filter up where the birds usually have the factory "glass bodied" item (used the simple OEM bracket). With formed steel lines it looks and works like factory stuff. Many of the factory pumps have useless itty bitty 1/8 pipe thread fittings - that have tiny holes through them. I drilled them out or rigged different hard plumbing, wherever I could. Also put a fuel pressure gauge on the GF62 by drilling out one of the tapped mounting holes.
http://forums.y-blocksforever.com/uploads/images/4a82d6cb-5ded-4612-8f22-5ec9.jpg
There are many ways to skin this cat - use common sense and engineer a safe system.



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 Steve Metzger       Tucson, Arizona
Bill Childs
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Thanks again Steve! A search of "mechanical fuel pump" revealed a dandy Wikipedia explanation of the relationship between fuel pump and carb float bowl to control fuel volume. Knowing that a valve in the float bowl and a low pressure spring under the pump diaphragm are on duty to control flow was key. Fun stuff!

Bill C
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Doesn't look like this one

FE Pump

Ted, Redding, CAhttp://www.y-blocksforever.com/forums/Uploads/Images/db7e67de-6104-4dd8-93b7-6798.jpg
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Is it this one for a 1965 F350?

65 F350 fuel pump

Ted, Redding, CAhttp://www.y-blocksforever.com/forums/Uploads/Images/db7e67de-6104-4dd8-93b7-6798.jpg
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I have gotten several of those pumps fron NAPA for $30.00

55 Vicky & customline

58 Rack Dump, 55 F350 yard truck, 57 F100

59 & 61 P 400's, 58 F100 custom cab, 69 F100, 79 F150, 82 F600 ramp truck, 90 mustang conv 7 up, 94 Mustang, Should I continue?

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I would like to switch to the 390 FE pump with cannister filter and remove the inline filter and sediment bowl, does anyone have a NAPA or Autozone part number or the inclusive years of the 390 truck motor which used it. I did find it on ebay used ($45) and NOS ($245) but would be more comfortable at the parts store. Thanks for any help.

Ted, Redding, CAhttp://www.y-blocksforever.com/forums/Uploads/Images/db7e67de-6104-4dd8-93b7-6798.jpg
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The diaphragm pumps are not "positive displacement" - best way to understand them. They simply "replace" whatever fuel is moved into the carburetor(s). Some don't keep up well as the rpm increases - that is the reason for the higher performance pumps on an engine that can rev.

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 Steve Metzger       Tucson, Arizona


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