Pat,you must be a youngin or just don't remember. The 301 chevy was back in the early 60's.It actually was the 283 bored out .125 overbore which resulted in a 4"bore with a 3.00"stroke.Some guys made them before GM's 'made for trans-am' z28 302 motor.Which technically speaking,is a 301+ rounded off/up to a 302.I don't know if all the 283's could be bored that much but some of them could.I owned a 302 in the 60's and those little motors like to rev but there's not much interest in them now days.