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Old 04-24-2013, 09:14 AM
eric32 eric32 is offline
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Hello Fbird I have tried that before and the engine does not like ported vacuum too well even with the previous smaller cam. From what I have read on the whole ported vs full manifold debate is bigger cams like full manifold for extra timing and a better idle and my engine runs better with full manifold then ported. When using ported I end up with the primary's open way too much and the secondary transfer slot is up higher then the front and making them equal ends up allowing too much air and I can't get the idle down to 900 rpm as the secondaries are open too much and by the time you get them right to work well they are not equal. I will try and see how it goes.
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