I ran a 500 on a 4 cyl. with some tuning , power valve and installing removable air bleeds which was easy to do. makes the carb totally adjustable. . We end up with very large air bleeds for the idle circuit. If your venturi valves are opened up past square on the transfer ports you will need to drill 1/8 holes in the venturis so you are not into the emulsion ports at idle . Get a Holley book and read it or search the web.
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View attachment 1715928690
