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View Full Version : What kind of fuel pump to use with dual carbs???



396_WAYS_TO_SPIT
03-17-2003, 08:09 PM
I have a mechanical fuel pump I wanted to use but someone said it wont be enough for dual holley 600's. What do you guys think? I have a huge electronic carter laying in the garage I can use. If I do run a electric fuel pump what pressure do I need to see for a dual carb set up? I have a regulator but I am way lost on this one :confused: :confused: Can someone please help??????
396_Ways_To_Be_Lost :)

Infomaniac
03-17-2003, 08:17 PM
A 13 lb Edelbrock with a bypass regulator after the carb inlets will feed 2 dominators on gasoline.

grimreaper
03-18-2003, 12:40 PM
what is your present fuel pressure.....cruise and WOT ?

VD CRUISER
03-18-2003, 05:52 PM
A Clay Smith mechanical pump with regulator works for me with two dominators on a 1071 Moonyham and 540 ci.

77charger
03-18-2003, 06:37 PM
my boss ran a single mallory comp 140 w/ dual 750s also used a reg for each carb set at 7 lb.Seemed to work very good.

DogHouse
03-18-2003, 06:47 PM
I've been running a Mallory Comp 140, making 750+hp. The marine version is USCG rated and comes with a single deadhead regulator. I think it was about 250 bones from Summit.

396_WAYS_TO_SPIT
03-18-2003, 10:07 PM
I was told that I cant run a mechanical pump. Is it true that it cant supply both carbs with a sufficient amount of fuel?
396

superdave013
03-18-2003, 10:32 PM
VD CRUISER:
A Clay Smith mechanical pump with regulator works for me with two dominators on a 1071 Moonyham and 540 ci. Clay Smith makes the best mechanical pumps hands down. I plan on using one on my 572" turbo deal.

Infomaniac
03-19-2003, 05:03 AM
396_WAYS_TO_SPIT:
I was told that I cant run a mechanical pump. Is it true that it cant supply both carbs with a sufficient amount of fuel?
396 You were told wrong.
My first post explains how. Keep your eye on my Quad Rotor 540 project and I will prove it

Craig
03-19-2003, 05:23 AM
I ran a stock Merc mechanical (on the sewater pump) and a Holley red pump on my 250 blown 454 w/ 2 750 DP's. It made 697 hprsepower and held 7 pounds of fuel pressure all the way to 6000 rpm. Just before I spun the bearings frown
[ March 19, 2003, 05:25 AM: Message edited by: Craig ]

Blown 472
03-19-2003, 07:40 AM
I run a clay smith mechanical on my 472 with two 850's.

cyclone
03-19-2003, 10:18 AM
even the high flow mechanical pumps from Holley will work. You dont need an electric fuel pump to feed dual carbs.

396_WAYS_TO_SPIT
03-19-2003, 07:11 PM
I just talked to my local boat guru and he said an early 455hp stock pump will be enough. The mecahnical I have is what he is talking about. He said I only need to worry about pressure(idle and wot)
Thanks for the input guys wink
396