The only thing overstressed about my 427 smallblock is MY NECK after driving it
Proper machining is a must square decking, line honing, deck plate hone goes a long way on any motor.
BTW: A 283 chevy isn't anything close to square 3 7/8" bore 3" stroke, it would have to be 3.56" bore & stroke to be square.
A 327 is 4" by 3.25
The bigger bore than stroke was much more important years ago before modern cylinder head and combustion chamber designs evened the playing field. Rotaing mass (bobweight) has a lot more to do with how fast a motor will rev than bore and stroke alone. A 4.04" x 4.17" 427 smallblock with equal flowing heads, cam timing and compression will still rev quicker than an FE unless you have (for example) a knifedged lightened crank and aluminum rods to even up the mass. And not only the bottom end, valvetrian mass also has a considerable effect and again, advantage smallblock.
Most 4 cylinder 4 valve motors often/usually have much larger strokes than bores and some of them rev to 8500 or more easily. A mitsubishi 4g63 motor is a good example, early first gen (89-92) blocks have 1.6:1 rod ratio rods and routinely take 9000rpm and 24psi of boost and make over 350 streetable horsepower, to put that into perspective, a 427 would need to produce 1225 hp to equal that HP/Cube.