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Author Topic: Fuel pump size?  (Read 5655 times)

Offline sbx22

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  • 1974 1/2 ton 350 sbc
Fuel pump size?
« on: September 05, 2011, 12:57:27 am »
How big (flow rate) of a fuel pump do I need? Mild street 350 with Holley 670 carb street avenger. Is there a mathematical way or equation to see how much flow I need? Thanks.
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Offline beastie_3

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Re: Fuel pump size?
« Reply #1 on: September 05, 2011, 02:35:28 pm »
stock is just fine.
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Offline bobcooter

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  • 1979 Scottsdale C-20
Re: Fuel pump size?
« Reply #2 on: September 05, 2011, 06:51:44 pm »
X2. If you go bigger like 110 GPH you will need a fuel pressure regulator. You don't have enough motor to need all of that.
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'79 C-20, 350/400, 3:73 gears, 9 leafs and a headache rack
Favorite Quote, "Good judgement comes from experience. Experience comes from poor judgement."

Offline chevymanrob

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Re: Fuel pump size?
« Reply #3 on: September 05, 2011, 07:03:01 pm »
agreed on bone stock. my old 350 (world 200cc heads, .488, 10-1 etc) would BARELY suck a stock pump dry after full throttle for like 10 seconds straight. save your $.
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ex G-body drag fan. best was 11.86 on a 93 octane SBC street car.

Offline 1980c10

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Re: Fuel pump size?
« Reply #4 on: September 05, 2011, 08:31:24 pm »
My stock pump works great on my 350 with a 670sa thats been re-jetted bigger than stock.
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Offline sbx22

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Re: Fuel pump size?
« Reply #5 on: September 05, 2011, 11:30:12 pm »
Thanks for the great replies. Again, a trustworthy group of guys we have here.
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