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Old May 9, 2010 | 06:00 PM
  #1  
POLICE COPTER's Avatar
POLICE COPTER
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Default Fuel Pump

My 71 350 has a fuel return vapor line along with the regular fuel line from the tank. I plan to use a Holley fuel pump and have discovered it has no place to attach the vapor line. What do I do with the vapor line.
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Old May 9, 2010 | 09:17 PM
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Mike Ward's Avatar
Mike Ward
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If your Holley pump has no return port you are downgrading the car. The return line helps prevent vapour lock, very important with E10 fuel.
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Old May 9, 2010 | 10:39 PM
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Rockn-Roll
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From: Carmichael CA
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Why are you replacing the OEM pump?
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Old May 10, 2010 | 06:34 AM
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joshtried
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From: Denver, CO
St. Jude Donor '08-'09-'10
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i assume you are using a manual holley, and not electric, in which case the answer would be to plug the return line and probably put a clamp on it. i just installed an electic pump that came with a regulator, and the regulator had a diagram that included the return, maybe you could use a regulator?
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Old May 10, 2010 | 07:21 AM
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POLICE COPTER
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That is actually very good question....I have put a new engine in the car...but but now I am thinking I will go with a new OEM pump so as to retain the vapor return line. Don't want any problems with vapor lock.
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