julitoMX_1964 Posted July 9, 2022 Share #1 Posted July 9, 2022 (edited) Hello, greetings, i hope everyone is doing fine. I have a question, well, actually a request and a question, first the request (to the administrators of the forums), since the 4 barrel, downdraft adaptations are not that rare among S-30 enthusiasts, wouldn´t it be nice if they could have a dedicated subforum just like the SU and Mikuni ones? and for my question, I have plans to install an Arizona Z car manifold and a Holley 390 in my ´72 240 (the rest of the engine will be left pretty much stock) Will the mechanical fuel pump provide enough fuel for the Holley? or should a switch to an electric one?(obviously with the correct specs) Thank you in advance Edited July 9, 2022 by julitoMX_1964 Link to comment Share on other sites More sharing options...
Mark Maras Posted July 9, 2022 Share #2 Posted July 9, 2022 The mechanical pump will work with the Holley carb. Both carbs need between 3-4 psi, which is normal pressure for a mechanical pump. 1 Link to comment Share on other sites More sharing options...
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