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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Fuel Pump

  • Thread starter Thread starter stangman16
  • Start date Start date Jul 23, 2006

stangman16

Active Member
Nov 16, 2004
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29
San Antonio, TX
Jul 23, 2006
#1
  • Jul 23, 2006
  • #1
I've come across a Holley Red electric fuel pump that I'm considering for my EFI conversion on my '66. Would this electric fuel pump supply the necessary pressure for the EFI system, or is this for a carb'd engine?

How much PSI is required to run a stock '91-'93 5.0 EFI ?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
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129
Jul 23, 2006
#2
  • Jul 23, 2006
  • #2
40 PSI or a bit more for WOT.

Stock pumps for later-HO engines was 95 LPH (as I recall).
 

Killer50stang

New Member
May 11, 2004
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Jul 23, 2006
#3
  • Jul 23, 2006
  • #3
stangman16 said:
I've come across a Holley Red electric fuel pump that I'm considering for my EFI conversion on my '66. Would this electric fuel pump supply the necessary pressure for the EFI system, or is this for a carb'd engine?

How much PSI is required to run a stock '91-'93 5.0 EFI ?
Click to expand...
I would get the Holley blue as it comes with a regulator that you can adjust the fuel pressure. Don't think they are much more.
 

stangman16

Active Member
Nov 16, 2004
640
4
29
San Antonio, TX
Jul 23, 2006
#4
  • Jul 23, 2006
  • #4
Killer50stang said:
I would get the Holley blue as it comes with a regulator that you can adjust the fuel pressure. Don't think they are much more.
Click to expand...

this one is actually free..

here's some comparison on the three - i would like to start with the Red one first since it's free and I just want to get this car driveable, then upgrade later when I add performance parts. do you think the red pump will work for the time being?

HOLLEY BLACK ELECTRIC FUEL PUMPS-------140 GPH @ 12-14 POUNDS PRESSURE

HOLLEY BLUE ELECTRIC FUEL PUMPS---------110 GPH @ 10-12 POUNDS PRESSURE

HOLLEY RED ELECTRIC FUEL PUMPS-----------97 GPH @ 5-7 POUNDS PRESSURE
 

Killer50stang

New Member
May 11, 2004
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Jul 23, 2006
#5
  • Jul 23, 2006
  • #5
stangman16 said:
this one is actually free..

here's some comparison on the three - i would like to start with the Red one first since it's free and I just want to get this car driveable, then upgrade later when I add performance parts. do you think the red pump will work for the time being?

HOLLEY BLACK ELECTRIC FUEL PUMPS-------140 GPH @ 12-14 POUNDS PRESSURE

HOLLEY BLUE ELECTRIC FUEL PUMPS---------110 GPH @ 10-12 POUNDS PRESSURE

HOLLEY RED ELECTRIC FUEL PUMPS-----------97 GPH @ 5-7 POUNDS PRESSURE
Click to expand...

Well free is good, but I would pick up a regulator if you don't already have one.
 

stangman16

Active Member
Nov 16, 2004
640
4
29
San Antonio, TX
Jul 23, 2006
#6
  • Jul 23, 2006
  • #6
Killer50stang said:
Well free is good, but I would pick up a regulator if you don't already have one.
Click to expand...

I have the stock regulator that is on the fuel rail - I assume all of this should work okay?
 

Killer50stang

New Member
May 11, 2004
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#7
  • Jul 23, 2006
  • #7
stangman16 said:
I have the stock regulator that is on the fuel rail - I assume all of this should work okay?
Click to expand...
I didn't think you that regulator was adjustable, but I may be wrong. I had issues with mine, which is my I got the blue pump.
 

stangman16

Active Member
Nov 16, 2004
640
4
29
San Antonio, TX
Jul 23, 2006
#8
  • Jul 23, 2006
  • #8
actually i don't believe it is adjustable. So I should shoot for the holley blue one w/the regulator? Or should I try this one first?

Does your regulator mount in the same location as the stock EFI fuel regulator?
 

Killer50stang

New Member
May 11, 2004
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Jul 23, 2006
#9
  • Jul 23, 2006
  • #9
stangman16 said:
actually i don't believe it is adjustable. So I should shoot for the holley blue one w/the regulator? Or should I try this one first?

Does your regulator mount in the same location as the stock EFI fuel regulator?
Click to expand...

It comes with mounting brackets. You can mount it whereeve you want, mine's on my firewall. No sense in getting a blue pump if this one is free. You can pick up those regulators for like $15 or so.
 
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