Thread: Figuring out fuel line size?

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You know what, looking athte wiring diagrams and such for electrical pump, you guys have me leaning hard for the mechanical.

Can somebody tell me how to figure the size and pressure of the pump I need? I see that many are fixed pressure, so I could just figure out what the carb needs. It's an edelbrock 750 but I don't know the model yet. I used a pressure regulator on the 429 just to be sure.

do I need more than the 40 micron filter? you guys use just one or two necessary? I appreciate all the help gentleman. I'm putting all this stuff on my wish list at summit and will move to shopping cart when car is here and I'm sure I don't need anything else.

last question (for now) return line? didn't use a return on the 429, it's between 400 and 500 hp. don't know if I need it on this one.

Red

Originally Posted by Dago Red

You know what, looking athte wiring diagrams and such for electrical pump, you guys have me leaning hard for the mechanical.

Can somebody tell me how to figure the size and pressure of the pump I need? I see that many are fixed pressure, so I could just figure out what the carb needs. It's an edelbrock 750 but I don't know the model yet. I used a pressure regulator on the 429 just to be sure.

do I need more than the 40 micron filter? you guys use just one or two necessary? I appreciate all the help gentleman. I'm putting all this stuff on my wish list at summit and will move to shopping cart when car is here and I'm sure I don't need anything else.

last question (for now) return line? didn't use a return on the 429, it's between 400 and 500 hp. don't know if I need it on this one.

Red

Red
For my Edelbrock 750, 1407 model,
it states the following:
6. Do not use more than 6.5 PSI fuel pressure. Excessive fuel
pressure may cause flooding. If your fuel pressure is too high, install
an adjustable pressure regulator, such as Edelbrock #8190.
If you can find a number for the carb, go to summit and type in Edelbrock #### in the search window. For Edelbrock carbs, they provide the instruction manuals as .pdf files that you can click on, with all the correct info you'll need. the number 6. instruction I posted was pasted from the pdf for my carb.
My carb also by the way has 3/8 " ports for fuel lines, so I just stuck with that size, but like the guys here with more experience said, it depends how much juice your running (ie HP you want!)
The carb number for my edelbrock was stamped on the base in front of the carb, right next to the passenger side bolt hole to the intake. Their are two numbers there, use the first 4 digit number in your search. Hope this helps.
If you like I can take a picture which sometimes makes more sense to me!