never finished it.
Got one intake port to to 285 cfm and a 170 cc port. could not duplicate it in any other port. still have 2 intake ports that have not been done.
someday i will pull them back out and dust them off...........hoping i have learned enough about this stuff to see what was different about that port.
I made templates out of solider and Z-spar, of that port, to copy to the matching ports. but never got the same resorts. was the only port with epoxy in it that would flow to 0.600 lift with out crashing.
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I dug it out sever times, and re did it with epoxy and with a little clean up it would come back, but never on any other port.
I truly believe its in the valve job and combustion chamber. but haven't looked back on them heads in years.