RHS flow data from today...

Nobody that's competent would ever state numbers and fail to say they did it without a spark plug. Besides the fact, flowing without a plug is pretty stupid.

Those heads don't need much to go the 265-270's. A 2.02 valve, little seat blend and a good valve job and you're there.

The hughes bench is pretty happy compared to the other two benches of people I know that work on heads.