Interesting comparison. The cubes being very close between the two I would bet on the stroked 318 for the street but I plugged in some generic pieces into the desktop dyno and got almost the same hp and torque between the two. It's a wash!
my question would be... whats the compression like on that small block to get those numbers in comparison to the B series 383?
I would actually say go with the Big Block 383 is the power level is going to be the same. The big block is gonna be making the same power, with less stress and less cost than the 318 stroked., in theory anyway.