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FED 387 · 11-27-2019, 02:10 PM

Yep---he needs a pump that can pump about 50 GPH so any pump that satisfies a 520 HP engines demands should work --- no need for a 500 GPH pump its overkill and might lead to other problems such as fuel blowing past the needle and seat do to over pressurization--- I think he was originally referring to a Holley carb not a Q-jet but I could be wrong--- he must remember thats it's the volume of fuel the pump has to provide pressure is a secondary factor --- pump location as well as fuel line size and number of restrictions in the line ( ie.fittings-filters-regulators-number of bends etc) is going to affect the volume of fuel that ultimately arrives at the carb

11-27-2019, 02:10 PM	#10
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,420 Likes: 529 Liked 333 Times in 180 Posts	Re: Fuel pump requirements Yep---he needs a pump that can pump about 50 GPH so any pump that satisfies a 520 HP engines demands should work --- no need for a 500 GPH pump its overkill and might lead to other problems such as fuel blowing past the needle and seat do to over pressurization--- I think he was originally referring to a Holley carb not a Q-jet but I could be wrong--- he must remember thats it's the volume of fuel the pump has to provide pressure is a secondary factor --- pump location as well as fuel line size and number of restrictions in the line ( ie.fittings-filters-regulators-number of bends etc) is going to affect the volume of fuel that ultimately arrives at the carb