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TBI to carb Q's

Discussion in 'The Garage' started by yoshisv, Sep 13, 2006.

  1. yoshisv

    yoshisv 1/2 ton status

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    I am trying to get my 89 K5 ready for a mud run this weekend. Today i put edelbrock performer heads on along with a performer rpm intake, And a holly 670 street avenger carb. My question is can i leave the electric fuel pump in the tank, And just run a fuel pressure regulator? Or do i have to run a manual pump?
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    pressure regulator with a return port to dump it back like a tbi.
     
  3. yoshisv

    yoshisv 1/2 ton status

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    Thanks for the quick reply.
     
  4. SkysTheLimit

    SkysTheLimit 1/2 ton status

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    To piggy-back on this one, will the stock TBI pump flow enough fuel to feed a 800-900cfm carb? would i need to choose a particular regulator for that or what?

    Thanks
     
  5. SkysTheLimit

    SkysTheLimit 1/2 ton status

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    Anybody know?

    thx
     
  6. mostwanted

    mostwanted 1/2 ton status

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    From what I have heard, a TBI fuel pump is high pressure, low volume. You need a low pressure high volume pump. My holley blue is rated 110 gallons per hour (g.p.i.) and I think like 6p.s.i.
     
  7. SkysTheLimit

    SkysTheLimit 1/2 ton status

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    I know i need the high flow, i was hoping the higher pressure would translate into higher flow when reduced. that's what happens when you half pay attention in physics all those years ago. :)

    guess i'll have to find someone going tbi that has a high flow pump they'd want to trade...
     

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