Mallory Bypass style regulator

91FrankinStang

New Member
May 15, 2005
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I bought this regulator to use for my carb conversion.. I am going to be ready to start the car for the first time in a day or two.. I was just wondering how you set the fuel pressure with this regulator..

It is the bypass style regulator.. I am running a Holley Blue pump.. I lost the instructions for the regulator so thats why I am asking here..

Anyone know what it is set at at the factory?? Do I need a fuel pressure guage to set the pressure? If so, that may be a problem.. I've already got all my fuel lines done and they are -6an braided lines..

If I need the guage, is there one that I can screw into an extra port on the regulator?? It would have to have a 3/8" npt pipe fitting.. I have 2 ports on the regulator I am not using..

any help appreciated.