Quote: Probably no gain unless you unshroud the valve by machining the combustion chamber.
if that is shrouded, you can expect very little then bore size comes into play. imo...
Anytime I've tried unshrouding the intake valve (straight wall side) on an OEM head, it hurt flow. I haven't tried it on the RPM though.
That is interesting, Have only seen the opposite.
Hmmmm..........3 notebooks full notes and a flow bench is pretty handy.
cant argue with that, just the few Ive had experience with always picked up, big or small block when opening up that area. wonder what the difference could be?
