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Fuel system question-is this enough?

Posted By: BEEQUIK

Fuel system question-is this enough? - 04/22/14 04:27 AM

So I have a mild 440 with 8-71 blower and two 750 holleys.Can I feed this with a -8 line and a magnafuel 275 pump? I think I can but just wanted some other opinions.
Posted By: Crizila

Re: Fuel system question-is this enough? - 04/22/14 04:43 AM

That pump wants a -10 in and out and a -8 bypass. So, -10 to the reg and -8 to the carbs.
Posted By: BEEQUIK

Re: Fuel system question-is this enough? - 04/22/14 04:50 AM

I have the chrome steel double pumper lines that are like 3/8 max. Do I still need the -10? Seems like a lot of fuel to just be squashed down like that. Or is it more about the available volume? Street strip car.
Posted By: Crizila

Re: Fuel system question-is this enough? - 04/22/14 11:01 AM

You could probably get away with -6's ( two per carb) from the reg to the carbs. What are you looking at running for boost?
Posted By: Cab_Burge

Re: Fuel system question-is this enough? - 04/22/14 06:51 PM

Run the #8 to the fuel regulator and then individual #6 to each carbs. from the regulator, unless you want to use #8 to the carbs. The needle and seats will be the smallest retsrictor in the fuel supply lines that way BTW,DO NOT use a 10 micron fuel filter between the fuel pump and the fuel cell, gas tank supply lines(only 80 or largermicron size filters ) I learned that one the hard way :crazyme :Call or look at Magnafuels diagrams on line for plumbing thier pumps
Posted By: Crizila

Re: Fuel system question-is this enough? - 04/22/14 08:00 PM

Quote:

Run the #8 to the fuel regulator and then individual #6 to each carbs. from the regulator, unless you want to use #8 to the carbs. The needle and seats will be the smallest retsrictor in the fuel supply lines that way BTW,DO NOT use a 10 micron fuel filter between the fuel pump and the fuel cell, gas tank supply lines(only 80 or largermicron size filters ) I learned that one the hard way :crazyme :Call or look at Magnafuels diagrams on line for plumbing thier pumps


Good info!! I had magnafuel design mine. Pre filter = 74 micron. Post filter = 25 micron.
Posted By: MR_P_BODY

Re: Fuel system question-is this enough? - 04/22/14 08:10 PM

Quote:

So I have a mild 440 with 8-71 blower and two 750 holleys.Can I feed this with a -8 line and a magnafuel 275 pump? I think I can but just wanted some other opinions.




I'm sure the -8 going forward is fine... but ALL
pumps like a larger supply side (inlet to the pump)..
remember that its atmospheric pressure pushing the
fuel into the pump... the pump builds the low pressure
for the fuel to be pushed in
Posted By: Cab_Burge

Re: Fuel system question-is this enough? - 04/23/14 03:59 AM

Quote:

So I have a mild 440 with 8-71 blower and two 750 holleys.Can I feed this with a -8 line and a magnafuel 275 pump? I think I can but just wanted some other opinions.


According to Magnafuel
techs. thier 275 pump will feed up to 750 HP , the 300 pump will feed up to 900 HP I bought the 275 pump thinking I woud never make 750 HP, I now own a 300 and 500 pump The blower will make you greedy for more power and traction once you start driving the car Buy the bigger pump now, you won't be sorry later
Posted By: cudadon

Re: Fuel system question-is this enough? - 04/23/14 03:56 PM

Quote:

So I have a mild 440 with 8-71 blower and two 750 holleys.Can I feed this with a -8 line and a magnafuel 275 pump? I think I can but just wanted some other opinions.




I have a 300 QS Magna Fuel pump and filter combo for sale. 1 year old $400 + sh.

I went to the PS 500 for E-85.
Thanks, Don

Attached picture 8121783-fuelpump.JPG
Posted By: hemi-itis

Re: Fuel system question-is this enough? - 04/24/14 05:36 AM

I went right to the 500 with filter.It will flow whatever you uneed .
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