Early 283's could be bored .125" to a 4" bore size, creating the legendary "301" engine. When Chevy combined the 327 block with the 283 crankshaft to make the Z-28 Camaro "302" they actually cheated about half a cubic inch. The actual displacement is 301.46 cubic inches.

301's had cooling problems because of the thin cylinder walls, but they ran like stink! 8,000+ RPM with the right porting, valves, camshaft and valve springs was not uncommon.

A small-block Chevy with over 50,000 miles on it WILL need to be rebored, guaranteed!
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!