franklin28 Posted April 7, 2014 Share Posted April 7, 2014 I have been told that by going from .006 on intake and exhaust to .004 on intake and .007 on exhaust there is a noticeable improvement in performance!Can this be true??? Vacuum gauge went from a fluctuating 19 to a steady 20. Link to comment Share on other sites More sharing options...
franklin28 Posted April 7, 2014 Author Share Posted April 7, 2014 The above comments were made by Tony A to me about his 1931. So Tony and I would like to get some feedback on this. He confirmed that when he went back to .006 and .006 the vacuum gauge and power levels went back to their previous levels. Back again to .004 and .007 again yielded improvements as noted. Link to comment Share on other sites More sharing options...
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