Fuel system upgrade

Discussion in 'Other' started by ss4825, Sep 11, 2014.

  1. ss4825

    ss4825 Well-Known Member

    This is for my 1966 Skylark with the 464 dressed out for BSA class. OK I got my new gas tank with the EFI pump and my regulator to knock the pressure down for a carb. Can I pump right into the mechanical pump? Or do I need to gut the mechanical pump and pipe through it?
  2. Rob Ross

    Rob Ross Well-Known Member

    That's how I have mine. My pump is 6-7 psi (no regulator needed) and it pushes to the stock pump, been that way for a almost 15 years and no issues. In the past on my buddies roller cammed engine cut the arm off and made a stock pump pass through.

    Both examples above are stock appearing fwiw.
  3. Cliff R

    Cliff R Well-Known Member

    Best to push thru a fake pump since you already have a fuel pressure regulator and in-tank electric pump. The stock pump simply becomes another restriction in the system as they are not "free-flowing" like electric pumps, they have valves that open/close varying speed with engine rpms.

    If the car will see on term street use I would also consider a return system to take some load off the pump......Cliff
  4. ss4825

    ss4825 Well-Known Member

    This is the route we choose. We are running -8AN supply and return lines.


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