My main objective is to drive at highway speed and to be able to run an air conditioner compressor and I'm running a T5 behind the motor. I'd hate to go stoking a good crank, but I've got a crank in a 235, that's spun a rod bearing. The crank isn't too bad, but I don't know if you can get the 4.125" stoke out of it, that the article describes. I've got a 1954 235 that I'm going to save for a lighter project and use a 261 in the truck. I don't want to be over boring for the sake of only getting a few more inches, but the stroker (if I can find a good piston option) can add a few inches. The lighter 292 rods and the lighter Caddy pistons, would help the bottom end too.
It would seem to me, the sharp bend in the floor of the intake ports is the biggest problem, as the fuel flow will end up with turbulence, as it comes off the port floor. The back wall probably isn't much of a problem as the piston will try to draw the mixture from the port entrance into the cylinder. The valve slamming shut several times a second is going to disrupt flow more, especially with turbulence already occurring above the valve.
Dave