My 1987 Stage-1 Buick 455 Regal's new HOLLEY850 Double-Pumper!!!

Discussion in 'The Mixing shop.' started by STAGE-2 TORQUE, Apr 23, 2012.

  1. STAGE-2 TORQUE

    STAGE-2 TORQUE STAGE-1 Buick "494Stroker" in 2021

    Gentlemen;

    I recently used a friend's old/worn non-choke Holley750 on my Stage-1 Regal.

    I now have a new Holley850 Double-Pumper (with the choke in open position with "tie-ties").

    My question is this, "How much fuel pressure should I have? Is "8-1/2 lbs p.s.i. TOO-MUCH???

    I have no fuel pressure regulator. I am using a Carter-110-gallon electric fuel pump in unison with TA Performance's Street-Strip Mechanical pump (for over 1-year now).


    :Do No:


    A few days ago video;



    http://www.youtube.com/watch?v=GUvbyDLEYqA






    Today's video;


    http://www.youtube.com/watch?v=oIebRj7MInA




    :Dou:
     
  2. 73-462GS

    73-462GS GS Mike

    Yes, in my opinion that is too much. 5 1/2-6 1/2 PSI tops is what I run. Mike D.
     
  3. STAGE-2 TORQUE

    STAGE-2 TORQUE STAGE-1 Buick "494Stroker" in 2021



    Thanks much, Mike. :TU:

    ... I just spoke to "TIM" of TA Performance; He stated that my "8 1/2 P.S.I." of fuel pressure with the new Holley850 DP is too much. Tim told me that "8 p.s.i." of fuel pressure is great ... "over" 8-p.s.i., I do indeed need a fuel pressure regulator.

    :3gears:
     
  4. killrbuick66455

    killrbuick66455 Well-Known Member

    Hey Chris, Just my Opinion 7 1/2 PSI is max For those type of needle and seats unless you are running a Viton Needles with springs. Its going to push fuel past the needle and seat, it will flood the car. Just giving you a heads up Just in case. :TU:
     
  5. STAGE-2 TORQUE

    STAGE-2 TORQUE STAGE-1 Buick "494Stroker" in 2021

    Thanks MUCH.

    When I get the FP-regulator ... it "WILL" be set a "7-1/2 P.S.I." of fuel pressure.

    :TU::TU:
     
  6. STAGE-2 TORQUE

    STAGE-2 TORQUE STAGE-1 Buick "494Stroker" in 2021

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