BB Mopar head design ??

-Also gotto remember, they MOLD these heads from cast iron, which would have had the tool and die department redesigning a whole new "slug" to be milled down to specs unknown so that in itself would have been a real costly job within the confines of that, the rocker shafts would have to be changed to fit, as well as the rockers themself. As well as pus rod issues could have occurred, so then you move one thing, and the rest has to be made in adjustment of that one design change. And as said, the angle the head meets the intake, what may have that been like if they had moved the location of the valves?

Having said that, man hours! What they did, was use what they had, in an effort to keep the cost down to a minimum, BUT have the utmost use overall...Plus, what was the chamber like? you move the valve inward more center of the head, what was the cast iron meat like nearest the intake? What was the oil passages like if this had been done? what was the rod openings been like to work with? A LOT of openings for oil, rods, and valves, and even the spark plugs could have been effected by location....Remember also back then, they didn't have the technology we have today as far as CAD and what it can do these days.....

A LOT goes on, on a "drawing board" when your working with something like this....