Just about any head can run the risk of hitting a water jacket when going to a 1.94 depending on the core shift of the casting The same goes for installing bigger exhaust valves when Installing the Wrong valve seat. The 194 head is not really a bottle neck Like some seem to think. And those that don't know them Like they think they do. Mike Kirby, Glen self and Like Many Others Ran those heads. Even the One's I have done SET track records Over a brazed in lump ported head. Yes Like Scott said it was designed for a small Bore , But the intake Port and Valve size is still the same, IT is the CC side of the head that makes It not wanted by Many. But they can Flow very good Numbers in the end. And if I didn't know what I was doing Or talking about My stuff never would have been Published.
So now let the Games begin.
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