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dual quads/fuel pressure

Discussion in 'The Hokey Ass Message Board' started by fred56, Jul 26, 2013.

  1. fred56
    Joined: Jul 27, 2005
    Posts: 55


    I have a SBC 283 with dual quads(Edelbrock 1406's). I know that normally with one Edelbrock the car likes no more than 4.5 lbs fuel pressure. Does this hold true with 2 carbs?
  2. TERPU
    Joined: Jan 2, 2004
    Posts: 2,275


    I run 6lbs on my AFB's. This will depend on your driving habits and the engines needs. Get an adjustable regulator. Or if you are running a SBC or Chrysler get a factory dual quad pump for your engine and it should work out just fine for a regular street application.

  3. The pressure will stay the same but you need to make sure you pump has enough volume to maintain the pressure .
  4. Pontiac Slim
    Joined: Jan 16, 2003
    Posts: 1,188

    Pontiac Slim
    Member Emeritus

    7 on Q-Jets

    Attached Files:

  5. Just like The moose said.The pressure should be the same,but you'll want more volume,[big fuel line]Put the regulator as close to the carbs as possible
  6. Standard gas&oil
    Joined: Dec 3, 2010
    Posts: 289

    Standard gas&oil
    from USA #1

    I have had good results running 4psi with dual Edelbrock 600 cfm carbs on top of my 6-71 blower. Before I had flooding issues with a stock fuel pump after shutdown, installed a fuel regulator near the carbs and that fixed the problem, no more flooding and hard re-starts.
  7. midroad
    Joined: Mar 8, 2013
    Posts: 294


    I run a pair of 500 Edelbrocks with a Holley red pump and pressure regulator set to 4 lb on my 29 Chevy with a 350.
    Never had a problem.
  8. fred56
    Joined: Jul 27, 2005
    Posts: 55


    Thanks for the Information, It was just what I was looking for.


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