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[HOGMIKE]

 

[Unbalanced]

 And what general engine building knowledge do you base this on ?

   30 years of Harley only engine building ?

  With this vast knowledge you have of head porting,what loss of cfm is there with a .010 port mismatch ?

Ever notice late model stock heads with just a cam change pick up good power.   if you were too look at the bottom entrance  of the intake port you will find that there is a flat section there that acts as a restriction more so than a port mismatch, and usually on all the late model stock production heads the intake port opening at the top is usually above the intake manifold ID.

   



 

[prodrag1320]

unless its REAL bad,a slightly mis-matched port wont be a total power killer,but a nice,matched manf/port cant be beat