Aftermarket/Replacement Cylinder Head Rule Change

[PJ305]

Originally Posted by Bob Mulry

I think that we are missing the point on these replacement heads...

Runner volume is just one way to compare castings...

With the new replacement castings I would like to know what the flow numbers are from each head..

Just because the volumes are the same it has nothing to do with air flow or the horsepower that they are capable of making..

It looks like another can of worms just got opened for Stock...

Just sayin'

I agree with Bob, no need for all the choices. You know the flow figures will be all over the map. NHRA needs to choose one brand that is readily available (after all they are only doing this because stock castings are to hard to find for a SBC) and apply whatever HP they show!