73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: sbx22 on September 05, 2011, 12:57:27 am

Title: Fuel pump size?
Post by: sbx22 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.

Title: Re: Fuel pump size?
Post by: beastie_3 on September 05, 2011, 02:35:28 pm

stock is just fine.

Title: Re: Fuel pump size?
Post by: bobcooter 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.

Title: Re: Fuel pump size?
Post by: chevymanrob 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 $.

Title: Re: Fuel pump size?
Post by: 1980c10 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.

Title: Re: Fuel pump size?
Post by: sbx22 on September 05, 2011, 11:30:12 pm

Thanks for the great replies. Again, a trustworthy group of guys we have here.