Roger - the heads were ported using the HO Blueprint and Assembly manual guidelines for street/strip round ports - plus my builder has about 30 years of race experience so he may have added just a little more to it (or taken a little more away).
They really seem to work well but I haven't had them flow tested, I may this winter before reinstalling.Barry
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66 Corvair Corsa - not so stock
74 Formula 400/4 sp - stock
79 TATA - almost stock
78 TA - owned it since new - not so stock (11.28 at 118.6)
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