Tossing Around 273 Ideas

I could prob get a way with the 1.88"/1.60 set up as that equals 3.48" worth of space in the 3.625" bore. The block I'm sure needs a min of .030" to clean up anyway so bore would be a min of 3.655". This gives roughly 3/32" on either side of the valve in the bore but that's if the chambers/bores are sharing the same theoretical center line. Who knows what it would be with core shift. lol Wouldn't have to notch too much I guess.