Yes, it is possible to bore a 283 .125". That's the way we used to make the "301" engines way back when! They had cooling problems because of the thin cylinder walls, but they ran like stink! Chevy stole the concept in 67, and put a 283 crankshaft in a small-journal 327, called it a "302", and put it in the Z-28 camaro. They cheated half a cubic inch, as the true displacement is 301.46. The 327 also has 1/4" extra stroke, to 3 1/4" to get the 327 cube size. The old 301's used to go to 8,000 RPM with the right cam and carburetion, if a hotrodder didn't mind scattering one occasionally!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!