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Thread: Holley 150 Black Pump

  1. #1

    Default Holley 150 Black Pump

    I have a 540 naturally aspirated engine - 750 HP. Dead head regulator. Will a Holley 150 Black Pump support this?

  2. #2
    Join Date
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    Quote Originally Posted by Nazty View Post
    I have a 540 naturally aspirated engine - 750 HP. Dead head regulator. Will a Holley 150 Black Pump support this?
    http://documents.holley.com/holleyfu...ems_chart1.pdf (Fuel Systems Selection Chart)
    https://www.holley.com/products/fuel...s/parts/12-150 (Holley 12-150 HP Fuel Pump)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3

    Default Fuel Pressure

    Put my new 150 Black pump & regulator in yesterday. Pressure started at 6 psi, then dropped to 3. I adjusted to 6 again, dropped to 4, so I adjusted again. Adjusted with motor running. Holley 1050 carb - 540 pump gas motor. Is this normal? Also, regulator is almost wide open.

  4. #4
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    Quote Originally Posted by Nazty View Post
    Adjusted with motor running. Also, regulator is almost wide open.
    No, that's not normal. Where is the electric fuel pump located? Is there a pickup tube/cavitation problem? What gauge are you using? Is this a return style fuel pressure regulator?
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  5. #5

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    There's a half inch pickup tube, and it's not a return style. Holley 12-803 regulator. I inspected the whole system for restrictions or sucking air.

  6. #6
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    Quote Originally Posted by Nazty View Post
    There's a half inch pickup tube, and it's not a return style. 803 regulator. I inspected the whole system for restrictions or sucking air.
    If I remember correctly, a dead-head fuel pressure regulator must be actually flowing fuel to properly adjust it. Meaning, the needle & seat has to be filling the fuel bowl, in order to set the flowing fuel pressure. Someone correct me if I'm wrong.
    When I was carbureted, I always used a fuel pressure regulator; you want consistent fuel pressure. Furthermore, I've only used return style fuel pressure regulators, even when I was carbureted (Holley 12-803BP).

    Also, I realize you're using the included Holley 12-803 FPR. However, it only has a .220" (7/32") restriction, and will not feed a big block high performance engine. The Holley 12-803BP is a great bypass type FPR. It has a .312" (5/16") restriction, which will feed a higher horsepower street engine much better than the Holley 12-803 FPR. If you want to use a good dead-head type FPR, then you need the Holley 12-704 FPR with its .437" (7/16") restriction, or other Holley high flow capacity FPR (LINK).

    I hate to be the bearer of bad news, but I think you're making a big mistake by using that small Holley fuel pressure regulator, included with that nice Holley fuel pump.
    The Holley 12-150 (black) HP Fuel Pump will support your horsepower (LINK), but the Holley 12-803 fuel pressure regulator has no place on a 750 horsepower engine.

    UPDATE: Holley now offers the HP Billet & Dominator Billet line of carburetor & EFI fuel pressure regulators. These new fuel pressure regulators are what I would use.
    http://documents.holley.com/holleyfu...ems_chart1.pdf (Fuel System Selection Chart) Find your fuel pump, then scroll to the right for the compatible FPR.
    http://documents.holley.com/flyer_ho...el_systems.pdf (Holley Fuel Systems Catalog) Detailed information about all of Holley's fuel system components.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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