318 head porting for the average joe

thats a good start, but theres something you should know about opening the push rod side of the port window up to the gasket, see...u create this narrow to wide to narrow spot which just slows the air down, and really...the push rod pinch at the level we're talkin here does not hinder air flow.
What i recommend is 'if at all' grind the push rod bulge as thin as possible without getting too thin then open the port window on that side to that and no more. on my 360/340 port jobs i never open the window to the push rod side of the gasket cause the pinch is where 'if any' restriction is, so its fruitless messing with the window on the side.
u dig?